Seven Wonders of the Modern World

Empire State Building
Surpassed by
World Trade Center (1972)
Location 350 Fifth Avenue, New York,USA
Status Complete
Constructed 1929 – 1931
Antenna/Spire 448.7 m
Roof 381.0 m
Top floor 373.2 m
Floor count 102
Floor area(257,000 m²
Architect Shreve, Lamb and Harmon.
Crosses Golden Gate
Locale San Francisco, California and Marin County, California
Longest span 1,280 m
Total length 2,737 m
Width 27 m
Height 227 m
Opening date 27 May 1937
Itaipu dam
Official name Usina Hidrelétrica Itaipu Binacional
Impounds Paraná River
Locale Foz do Iguaçu,  Brazil & Ciudad del Este  Paraguay
Length 7 700 m
Height 196 m
Construction began February, 1971
Opening date May 5, 1984…