The trade center's twin 110-story towers, the planet's tallest buildings when they officially opened in 1973, were destroyed in the September 11, 2001, terrorist attacks against the U.S.
The Pioneer Building, completed in 1892, was the prestige office building during the Klondike Gold Rush, housing 48 different mining firms in 1897.
NASA will be at SXSW Interactive 2013. Attending? Find one of our panels to learn more about NASA and our people, missions, and programs: http://open.nasa.gov/blog/2013/01/28/space-meetup-at-sxsw/ Read more.
This location is home to Fort Necessity, built in 1754 under the command of George Washington during a prelude battle to the French and Indian War.
City Hall Plaza in Boston, Massachusetts, is a large, open, unadorned public space in the Government Center area of the city.
