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