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Displaying results 1 of 20 - 256
Date Image Innovation Sort descending City State Country
1718-1744 The Espada Aqueduct, running over the Piedras Creek Acequias of San Antonio San Antonio TX USA
109-110 Acquedotto Traiano-Paolo Acquedotto Traiano-Paolo Rome RI Italy
1726 - 1738 Acueducto de Queretaro Acueducto de Queretaro Santiago de Querétaro Querétaro Mexico
First century AD Acueducto de Segovia Acueducto de Segovia Segovia SEG Spain
1942 Alaska Highway Alaska Highway Delta Junction AK USA
1834 Allegheny Portage Railroad Allegheny Portage Railroad Duncansville PA USA
1889 Alvord Lake Bridge Alvord Lake Bridge San Francisco CA USA
1911 Armour-Swift-Burlington Bridge Armour-Swift-Burlington Bridge Kansas City MO USA
1940 Arroyo Seco Parkway Arroyo Seco Parkway Los Angelos CA USA
1834 Ascutney Mill Dam Ascutney Mill Dam Windsor VT USA
1926-1929 Atlantic City Convention Hall Atlantic City Convention Hall Atlantic City NJ USA
1928 Bailey Island Bridge Bailey Island Bridge Harpswell ME USA
between 1842 and the Baltimore & Ohio Roundhouse & Shop Complex Baltimore & Ohio Roundhouse & Shop Complex Martinsburg WV USA
1931 Bayonne Bridge Bayonne Bridge Staten Island NY USA
1911 Belle Fourche Dam Belle Fourche Dam Belle Fourche SD USA
1761 Bethlehem Waterworks Bethlehem Waterworks Bethlehem PA USA
1856 Bidwell Bar Suspension Bridge Bidwell Bar Suspension Bridge Oroville CA USA
1855 Blenheim Bridge Blenheim Bridge Gilboa NY USA
1943 Blimp Hangars Blimp Hangars Irvine CA USA
1935-1937 Blue Ridge Parkway Blue Ridge Parkway Blue Ridge Mountains VA USA

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