Acequias of San Antonio
Acueducto de Segovia
Alaska Highway
Allegheny Portage Railroad
Alvord Lake Bridge
Armour-Swift-Burlington Bridge
Arroyo Seco Parkway
Ascutney Mill Dam
Atlantic City Convention Hall
Bailey Island Bridge
Banaue Rice Terraces
Bayonne Bridge
Beginning Point of the U.S. Public Land Survey
Belle Fourche Dam
Bethlehem Waterworks
Bidwell Bar Bridge
Blenheim Bridge
Blimp Hangars
Blue Mosque
Blue Ridge Parkway
Bollman Truss Bridge
Bonneville Dam, Columbia River System
Borden Base Line
Boston Subway
Brandenburg Gate

Bridgeport Covered Bridge
Bridges of Keeseville
Bridges of Niagara
Brooklyn Bridge
Brooks AFB, Old Hangar 9
Buckingham Palace
Buffalo Bill Dam
Bunker Hill Covered Bridge
Cabin John Aqueduct
Caledonian Canal
Canton Viaduct
Cape Cod Canal
Cape Hatteras Lighthouse
Carrollton Viaduct
Casa Mila
Castillo de San Marcos
Cedar Falls Water Supply
Central Pacific Railroad
Chain of Rocks Water Purification Plant
Charles River Basin Project
Charleston - Hamburg Railroad
Charlestown Naval Dry Dock
Cheesman Reservoir
Chesapeake and Delaware Canal
Choate Bridge

City Plan of Philadelphia
City Plan of Savannah
Cleveland Hopkins Airport
Colorado River Aqueduct
Columbia River Scenic Highway
Columbia-Wrightsville Bridge
Conwy Suspension Bridge
Conwy Tubular Bridge
Croton Water Supply System
Crozet's Blue Ridge Tunnel
Cumbres and Toltec Scenic Railway
Davis Island Lock and Dam
Denison Dam
Detroit-Windsor Tunnel
Dismal Swamp Canal
Dorton Arena
Druid Lake Dam
Dublin-Belfast railway line
Duck Creek Aqueduct
Dunlap's Creek Bridge
Durango-Silverton Branch of the D&RGW RR
Eads Bridge
East Maui Irrigation System
Eddystone Lighthouse
Eiffel Tower

El Camino Real
El Camino Real (The Royal Road) Eastern Branch
Elephant Butte Dam
Ellicott's Stone
Embudo Stream Gauging Station
Erie Canal
Fink Deck Truss Bridge
Fink Through Truss Bridge
First Concrete Pavement
First New York Subway
First Owens River - Los Angeles Aqueduct
Five Stone Arch Bridges
Folsom Hydroelectric Power System
Fort Peck Dam
Forth Railway Bridge
Frankford Avenue Bridge
Frisco Bridge
Fritz Engineering Laboratory
Galveston Seawall and Grade Raising
George Washington Bridge
Giza pyramids
Going-to-the-Sun Road
Golden Gate bridge
Golden Gate Bridge
Golden temple