The Jonathan Hasbrouck House (1750), Washingtonâs headquarters, is now a state historical site with an adjacent museum. Nearby are the New Windsor Cantonment (a reconstruction of a winter camp of the Continental Army) and the preserved headquarters (the John Ellison House, 1754) of General Henry Knox.
Bilbao Guggenheim. The Guggenheim Museum in Bilbao is not only one of the most famous 20th century buildings globally, but it is credited with the current phenomenon of so-called âiconic architectureâ [of course iconic architecture has existed long before the Bilbao Guggenheim].
The Pentagon was the world's largest office building for a while. The Vehicle Assembly Building, where NASA puts together its rockets, is pretty amazing. It was built in 1966 and was only supposed to last 10 years. It's still in use. Burj Khalifa is currently the tallest man-made structure in the world. You might find this list interesting: List of largest buildings in the world.