โบราณสถานและสถานที่ได้รับการคุ้มครอง · Center City East · 13 คำแนะนำและคำวิจารณ์
HISTORY: Built in 1789 as the Philadelphia County Courthouse, this was where the U.S. Congress met from 1790 to 1800, when Philadelphia was America’s capital. In 1791, the Bill of Rights was ratified here.
HISTORY: Hoover Dam was built during the Great Depression, between 1931 and 1936. The project employed thousands of workers, cost more than 100 lives and gave rise to Boulder City.