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Duck Creek Aqueduct Covered Bridge

Doe River (Elizabethton) Covered Bridge

Bunker Hill Covered Bridge

Ashuelot Covered Bridge

Ackley Covered Bridge

Controlled Directional Drilling

World's First Oil Well

FAA William J. Hughes Technical Center

North Island Naval Air Station

Farnborough Research Establishment (Royal Aircraft Establishment)

Purdue University Airport

T.S. Lowe’s 1861 Balloon Launch

NASA Langley Research Center

Dutch Flats Airport

Rocketdyne Santa Susana Field Laboratory

Picatinny Arsenal

Oakland Municipal Airport

Goddard Rocket Launch Site

NASA John C. Stennis Space Center

The Cincinnati Observatory

Lunken Field

Hobby 1940 Air Terminal

Woomera Launch Facility

Home and Birthplace of Alberto Santos-Dumont

The Boeing Red Barn

Huffman Prairie

Point Mugu Naval Base

College Park Airport

Igor I. Sikorsky Memorial Airport, formerly Bridgeport Municipal Airport

First Motorized Flight in Canada - Baddeck, Nova Scotia

Getafe Airfield

Pearson Field

Pitcairn Field #2

Kitty Hawk, NC

National Institute of Standards and Technology (NIST)

Mellon Institute of Industrial Research, Carnegie Mellon University

Legacy of Rachel Carson’s Silent Spring

Founding of the American Chemical Society

Izaak Maurits Kolthoff and Modern Analytical Chemistry

Infrared Spectrometer and the Exploration of Mars

Keeling Curve: Study of Atmospheric Carbon Dioxide

Frozen Foods Research: Time-Temperature Tolerance Studies

Food Dehydration Technology

Fluid Bed Reactor

Flavor Chemistry Research at the USDA

Discovery of Ivermectin

Development of the Pennsylvania Oil Industry

DayGlo Fluorescent Pigments

Chemistry at Jamestown

Chemical Abstracts Service (CAS)

Savannah Pulp and Paper Laboratory (Charles Herty)

Development of Occupational Medicine

Titan Crane

Flight of Five Locks

Grand Central Terminal

Huey P. Long Bridge

Lake Pontchartrain Causeway Bridge

Newark Airport

Zion Mt. Carmel Tunnel and Highway

Waterford (Union) Bridge (Replaced in 1909)

Utica Memorial Auditorium

The Dalles Lock and Dam

Tacoma Narrows Bridges

Site of the Founding Meeting of ASCE on Nov 5, 1852

Reversal of the Chicago River

Rensselaer Polytechnic Institute

Acetyl Chemicals from Coal Gasification

Transistor

First Wireless Radio Broadcast by Reginald A. Fessenden

First Wearable Cardiac Pacemaker

First Transpacific Reception of a Television (TV) Signal via Satellite

First Transatlantic Reception of a Television Signal via Satellite

First Television Broadcast in Western Canada

First Semiconductor Integrated Circuit (IC)

First Real-Time Speech Communication on Packet Networks

First Radio Astronomical Observations Using Very Long Baseline Interferometry

First Operational Use Of Wireless Telegraphy

First Intelligible Voice Transmission over Electric Wire

First Distant Speech Transmission in Canada,

First Direct Broadcast Satellite Service

First Central Station in South Carolina

First 500 MeV Proton Beam from the TRIUMF Cyclotron

First 735 kV AC Transmission System

Experimental Breeder Reactor I

Electronic Technology for Space Rocket Launches

ENIAC (Electronic Numerical Integrator and Computer)

Electric Fire Alarm System

Eel River High Voltage Direct Current Converter Station

Early Developments in Remote-Control

Discovery of Superconductivity

Discovery of Radioconduction by Edouard Branly

Directive Short Wave Antenna

Development of VHS, a World Standard for Home Video Recording

Development of the HP-35, the First Handheld Scientific Calculator

Development of Ferrite Materials and Their Applications

Development of Electronic Television

Demonstration of Practical Telegraphy

County Kerry Transatlantic Cable Stations

Compact Disc Audio Player

Commercialization and Industrialization of Photovoltaic Cells

Chivilingo Hydroelectric Plant

Callan's Pioneering Contributions to Electrical Science and Technology

Point of Beginning, U.S. Public Lands

River des Peres Sewage & Drainage Works

Missouri River Bridge

Lacey V. Murrow Bridge and Mount Baker Ridge Tunnels

Kansas City Park and Boulevard System

Texas Commerce Bank Building

Stevens Pass Railroad Tunnels & Switchback System

San Antonio River Walk & Flood Control System

Lake Washington Ship Canal & Hiram M. Chittenden Locks

Joining of the Rails - Transcontinental Railroad

Ironbridge

Iron Building of the U.S. Army Arsenal

International Boundary Marker #1

Ifugao Rice Terraces

Hydraulics Laboratory at the University of Iowa

Hydraulic-Inclined Plane System of the Morris Canal

Horseshoe Curve

Hoosac Tunnel

Granite Railway

Forth & Clyde Canal and Union Canal

Five Stone Arch Bridges

Firth of Forth Railway Bridge

First New York Subway

Fink Through Truss Bridge

Embudo, New Mexico Stream Gauging Station

El Camino Real - The Royal Road

Eads South Pass Navigation Works

City Plan of Philadelphia

Chesbrough's Water Supply System

Seventh Street Improvement Arches

Ohio Canal System

Louisville and Portland Canal Locks & Dam

El Camino Real (The Royal Road) Eastern Branch

Saturn V Rocket

Pegasus 3 Engine BS 916

RL-10 Rocket Engine

Arnold AFB Wind Tunnel

Boeing 367-80 (Prototype for Boeing 707)

Hydromatic Propeller

Link C-3 Flight Trainer

Wright Field 5-foot Wind Tunnel

Worthington Horizontal Cross-compound Pumping Engine

Zuiderzee Enclosure Dam

Xerography

Woodhead Dam

Wright Flyer III

Old Wisla Bridge

New England Wireless and Steam Museum

Williams-Miles History of Chemistry Collection

Williamsburg Bridge

White River Concrete Arch Bridge

Wilkinson Mill

Wilkinson Mill

Watkins Woolen Mill

West Baden Springs Hotel

Westmoreland Iron Works

Whipple Truss Bridge

White Pass & Yukon Railroad

Watertown Arsenal

Washington Monument

Ward House

Waldo-Hancock Suspension Bridge

McCormick Reaper

Walnut Street Bridge

Viaducto del Malleco

Voyager Spacecraft Interplanetary Explorers

Vulcan Street Plant

Kentucky Dam

USS Albacore

USS Cairo Engine and Boilers

Vandenberg Air Force Base

U.S. Capitol

Union Station

Union Canal Tunnel

Borden Base Line

Bollman Truss Bridge

Tunkhannock Viaduct

Turbinia

Triborough Bridge Project

Travel Air Airplane Manufacturing Company in Wichita

Central Pacific Railroad

Tidbinbilla Tracking Station

Orroral Valley Tracking Station

Honeysuckle Creek Tracking Station

Tipon

Tokaido Shinkansen (bullet train)

Tokaido Shinkansen

Thames Tunnel

Theodore Roosevelt Dam & Salt River Project

Thomas Viaduct Railroad Bridge

Tennessee State Capitol

Multi-Zone Automatic Temperature Control System

Menai Suspension Bridge

Starrucca Viaduct

Statue of Liberty

Suez Canal Project

Sydney Harbour Bridge

Tehachapi Pass Railroad Line

SS Jeremiah O'Brien

SS Badger Carferry

St. Charles Avenue Streetcar Line

St. Clair Tunnel

Alternating Current Electrification (DUPE: IEEE+ASME)

SS Great Britain

Springfield Armory

Solar Energy and Energy Conversion Laboratory

Smithfield Street Bridge

Snoqualmie Falls Cavity Generating Station

Snowy Mountains Hydro-Electric Scheme

Stanford Linear Accelerator Center (SLAC)

Stanford Linear Accelerator Center

Siegfried Marcus Car

Shippingport Nuclear Power Station

Sewall's Bridge

Second Street Bridge

San Jacinto Monument

Sault Ste. Marie Hydroelectric Complex

City Plan of Savannah

Caledonian Canal

San Francisco - Oakland Bay Bridge

Samson Mine Reversible Waterwheel & Man Engine

Reynolds-Corliss Pumping Engine

Rockville Stone Arch Bridge

Blue Ridge Parkway

Salginatobel Bridge

Reed Gold Mine Ten-Stamp Mill

Reed Gold Mine Ten-Stamp Mill

Refrigeration Research Museum

Alvord Lake Bridge

Red Hill Underground Fuel Storage Facility

First Ram-Type Blowout Preventer BOP

Alexanderson Radio Alternator

Ames Hydroelectric Generating Plant

Pratt Institute Power Plant

American Precision Museum

Quebec Bridge

Queensboro Bridge

Portland Observatory

Portland Head Light

Potowmack Canal and Locks

Poughkeepsie-Highland Bridge

Port Washington Power Plant

Ponte Maria Pia Bridge

Foundation of Polymer Science by Hermann Staudinger

Pit-Cast Jib Crane

Pioneer Zephyr

Pioneer Oil Refinery California Star Oil Works

Pin-Ticketing Machine

Pilatusbahn

Philadelphia Municipal Water Supply

Philadelphia City Hall

Peterborough Hydraulic (Canal) Lift Lock

Pennsylvania Turnpike (Old Section)

Peavey-Haglin Concrete Grain Elevator

Panama Canal

"Old Red" Cotton Picker

Discovery of Organic Free Radicals by Moses Gomberg

Paddle Steamer Uri

Nucleic Acid and Protein Chemistry Research at Rockefeller University

NS Savannah

Northampton Street Bridge

Northern Pacific High Line Bridge No 64

Newark Airport

NMR and MRI: Applications in Chemistry and Medicine

Norris Dam

New Castle Ice Harbor

The Reactive Noble Gases

Nassawango Iron Furnace

National Road

Navajo Bridge

NASA Ames Unitary Plan Wind Tunnel

NASA Ames Research Center

NAIC/Arecibo Radiotelescope

Morris Canal Reaction Turbine

Moseley Wrought Iron Arch Bridge

Mount Wilson Observatory, 100-inch Hooker Telescope

Mullan Road

Mormon Tabernacle

Morison's Memphis Bridge

Montgomery Glider

Minot's Ledge Lighthouse

Model T

Moffat Tunnel

Monongahela Incline

Middlesex Canal

United States Military Academy

Old Mill in Nantucket

Milwaukee River Flushing Station

Milwaukee Metropolitan Sewage Treatment Plant

McNeill Street Pumping Station

McKinley Climatic Laboratory

Adams Hydroelectric Generating Plant

Rogue River Bridge

Manhattan Bridge

Marshall Building

Mason-Dixon Line

Mackinac Bridge

Machu Picchu

Zhaozhou (or Anji) Bridge

Lombard Steam Log Hauler

Lookout Mountain Incline Railway

Belle of Louisville

High Bridge

Leavitt-Riedler Pumping Engine

Lawrence Experiment Station

Hacienda La Esperanza Sugar Mill Steam Engine

Invention of the LASER

Knight Foundry and Machine Shop

Kinzua Railway Viaduct

King's Road

Charles River Basin Project

Kaplan Turbine

Kavanagh Building

Bridges of Keeseville

Kamehameha V Post Office

Joshua Hendy Iron Works

Discovery of Oxygen by Joseph Priestly

Johnstown Incline

Jackson Ferry Shot Tower

Jacobs Engine Brake Retarder

Jeep Model MB

John A. Roebling Bridge

John Penn & Sons Oscillating Steam Engine

Center Pivot Irrigator

Birthplace of the Internet

Interborough Rapid Transit System Original Line

Hwaseong Fortress

Sweetwater Dam

Icing Research Tunnel, NASA Lewis Research Center

Ingalls Building

Hughes Two-Cone Drill Bit

Howard Hughes Flying Boat, HK-1

Houston Ship Channel

Houston Municipal Airport Terminal

Hoover Dam

Holland Tunnel Ventilation System

Holt Caterpillar Tractor

Holyoke Water Power System

Hohokam Canal System

Polymer Research Institute

Havemeyer Hall

Hanford B Reactor

Hanford B Reactor

Harris-Corliss Steam Engine

Cranetown Triangulation Site

Guayabo Ceremonial Center

Gunnison Tunnel

Eiffel Tower

Hagia Sophia

Victoria Dutch Windmill

Greens Bayou Generator Plant

Gravimetric Coal Feeder

Invention of COBOL Programming by Grace Murray Hopper

Grand Coulee Dam

Graue Mill

Gota Canal

Gosport Naval Dry Docks

Goodyear Airdock

Goldfields Water Supply

Ginaca Pineapple Processing Machine

Going-to-the-Sun Road

Golden Gate Bridge

Gilman Hall

Getafe Airfield

Georgetown Steam Hydro Generating Plant

GE Re-entry Systems

Deciphering the Genetic Code

George W. Woodruff School of Mechanical Engineering

Georgetown Steam Plant

Garfield Thomas Water Tunnel

Galveston Seawall and Grade Raising

Fusion-welded Test Boiler Drum

Frankford Avenue Bridge

Fritz Engineering Laboratory

Discovery of Fullerenes

Fort Peck Dam

Folsom Power House #1

Folsom Hydroelectric Power System

FMC Citrus Juice Extractor

Evinrude Outboard Motor

Fairmount Water Works

Ferries & Cliffhouse Cable Railway Power House

Fink Deck Truss Bridge

Erie Canal

Advanced Engine Test Facility at Marshall Space Center

Ellicott's Stone

Eiffel Drop Test Machine and Wind Tunnel

Elephant Butte Dam

Wheeling Suspension Bridge

Eglin Air Force Base

Edison Experimental Recording Phonograph

Edison 'Jumbo' Engine-Driver Dynamo

Eddystone Lighthouse

Eads Bridge

Ecole Nationale des Ponts et Cheussees

Eddystone Station Unit #1

Durango-Silverton Branch of the D&RGW RR

Duquesne Incline

Dunlap's Creek Bridge

Duck Creek Aqueduct

Downey Industrial Plant

Drake Oil Well

Drake Oil Well

Druid Lake Dam

Digital Micromirror Device

Dismal Swamp Canal

Disneyland Monorail System

Dorton Arena

Detroit-Windsor Tunnel

Detroit Edison District Heating System

Delta Air Lines’ Original 1940s Buildings

Davis Island Lock and Dam

Decew Falls Hydro-Electric Plant

Roebling's Delaware Aqueduct

Crozet's Blue Ridge Tunnel

Cruquius Pumping Station

Cumbres and Toltec Scenic Railway

Denison Dam

David Taylor Model Basin

Crown Cork and Soda Filling Machine

Croton Water Supply System

Creusot Steam Hammer

Cortland Street Drawbridge

The Cotton Module Builder

Craigellachie Bridge

Cornwall Iron Furnace

Cornish - Windsor Covered Bridge

Corning Ribbon Machine

Cooperative Fuel Research Engine

Cooper Steam Traction Engine Collection

Conwy Tubular Bridge

Coolspring Power Museum

Cooper-Bessemer Type GMV Integral-Angle Gas Compressor

Conwy Suspension Bridge

First Concrete Pavement

Atanasoff-Berry Computer

Columbia River Scenic Highway

Columbia-Wrightsville Bridge

Colvin Run Mill

Commonwealth Building Heat Pump

Colorado River Aqueduct

Code-Breaking at Bletchley Park during World War II

East Wells Onieda Street Power Plant

BF Clyde's Cider Mill

Cincinnati Observatory

Birthplace of the SPICE Circuit Simulation Program

Cleveland Hopkins Airport

Choate Bridge

Childs-Irving Hydroelectric Project

Chicago Burlington & Quincy Railroad Roundhouse

Chestnut Street Pumping Engine

Carrollton Viaduct

CERN Experimental Instrumentation

Cheesman Dam

Chesapeake and Delaware Canal

Chapin Mine Pump

Chandler Chemistry Laboratory

Cape Hatteras Lighthouse

Castillo de San Marcos

Bunker Hill Covered Bridge

Cedar Falls Water Supply

Chain of Rocks Water Purification Plant

Cape Cod Canal

Old Cape Henry Lighthouse

Canton Viaduct

Callan's Pioneering Contributions to Electrical Science and Technology

Buffalo Bill Dam

Burton Farmers Gin Mill

Cabin John Aqueduct

Buckeye Steam Traction Ditcher

Browning Firearms Collection

Brooks AFB, Old Hangar 9

Brooklyn Bridge

Bridgeport Covered Bridge

Bremen Airport

Brandywine River Powder Mills

Book "Experiments and Observations on Electricity" by Benjamin Franklin

Boston Subway

Boyden Hydraulic Turbines

Blood Heat Exchanger

Blenheim Bridge

Birome Ballpoint Pen Collection

Bethlehem Waterworks

Bidwell Bar Suspension Bridge

Big Brutus Mine Shovel

Blimp Hangars

Central Yacht Basin

Benjamin Franklin's Work in London

Belle Fourche Dam

Belle Isle Gas Turbine

Montgomery Bell's Tunnel

Bailey Island Bridge

Baltimore & Ohio Roundhouse & Shop Complex

Basic-Oxygen Steel Making Vessel

Bay City Walking Dredge

Bayonne Bridge

Atlas Launch Vehicle

Atlantic City Convention Hall

Ascutney Mill Dam

Arroyo Seco Parkway

Bonneville Dam, Columbia River System

Apollo Lunar Module LM-13

Apollo Space Command Module

A.B. Wood Screw Pump

Armour-Swift-Burlington Bridge

The Chemical Revolution - Antoine-Laurent Lavoisier

George Washington Bridge

AC Electrification of the New York, New Haven & Hartford Railroad (DUPE: IEEE+ASME)

Alligator Amphibian

Alouette-ISIS Satellite Program

Allegheny Portage Railroad

Alden Research Laboratory Rotating Boom

Alaska Highway

Ljungstrom Air Preheater

Acueducto de Queretaro

Acueducto de Segovia

ALCOA 50,000-ton Hydraulic Forging Press

Acequias of San Antonio

Southern Railway Spencer Shops

Sholes & Glidden 'Type Writer'

Radio City Music Hall Hydraulically Actuated Stage

Saugus Ironworks

Pullman Sleeping Car Glengyle

Pierce-Donachy Ventricular Assist Device

Noria al-Muhammadiyya

Lapeyre Automatic Shrimp Peeling Machine

Mr. Charlie Oil Drilling Rig

Newcomen Engine

Fairbanks Exploration Company Gold Dredge No. 8

Ditch Witch DWP Service-Line Trencher

ASME Boiler and Pressure Vessel Code

Bergen County Steam Collection

Split-Hopkinson Pressure Bar Apparatus

Penn. RR GG1 Electric Locomotive #4800

Southern Pacific #4294 Cab-in-Front Steam Locomotive

Thermo King© C Refrigeration Unit

IBM 350 RAMAC Disk File

Miami Conservancy District

Sikorsky VS-300 Helicopter

Grumman Wildcat “Sto-Wing” Wing-folding Mechanism

Maine Turnpike

Norfolk & Western #611, Class J Steam Locomotive

Holland Tunnel

Keokuk Hydro-Power System

North Island Main Trunk Railway

Marlette Lake Water System

Engine-Driven Dynamo

Idols Station, Fries Manufacturing & Power Company

Mount Washington Cog Railway

Muskingum River Navigation System

Great Western Railway

Louisville Waterworks

Lowell Waterpower System

Great Falls Raceway and Power System

Prehistoric Mesa Verde Reservoirs

Aberdeen Range, Aberdeen Proving Ground

Rumford Baking Powder

First Electrolytic Production of Bromine

Research on the Atomic Weight of Oxygen by Edward W. Morley

C.V. Raman and the Raman Effect

City

Blue Ridge Mountains

Bridge City, LA 70094

Calcutta, India

Coalbrookdale-Ironbridge

College Station

College Station

Dublin to Belfast

East Garden City

Egg Harbor Township

Faiyum District

Freiburg im Breisgau

Great Barrington

Greenwich Township

Isle of Anglesey

Kingston Springs

Long Island City

Mexico City to Santa Fe

Montezuma County

New York City to Hoboken

Newcastle upon Tyne

North Shannonvale

North Vancouver

Phillipsburg to Newark Bay

Quincy and Milton

Sankt Andreasberg

Santiago de Querétaro

Sault Ste. Marie

Saulte Sainte Marie

South Deerfield

Stockton Springs

Tonto National Forest

Truth or Consequences

University Park

Washington, D.C.

Wright-Patterson Air Force Base

State

State

Buckinghamshire

Västra Götaland County

Country

Country

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