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Mount Rushmore
Gateway Arch
Capitol Hill
Independence Hall
Alamo
American University
Watergate complex
USA's second busiest high speed rail system
17 Smithsonian museums, galleries, and a zoo
White House
Vietnam Veterans Memorial
Liberty Bell
Mount Vernon
Federal Reserve
George Washington University
Potomac River
Dome of the Rock
Supreme Court
Washington Monument
Georgetown University
170+ foreign embassies
around 18,000 cherry trees
Statue of Liberty
Chesapeake & Ohio Canal National Park