| BUILDINGS & STRUCTURES |
| Early
Skyscrapers Air Conditioning Elevators & Lifts Woolworth Building New York |
Public
Buildings Hospitals | Prisons The Baths at Caracalla The Crystal Palace Prudential Building London |
| Structures Mersey Tunnel | Eiffel Tower London Sewers | Tower Bridge Early Mine Ventilation Niagara Falls Power Station Roman Aqueducts The Brabazon Hangar |
Theatres
& Cinemas European |
