US Capitol, Jan. 20, 2008,
Planet Earth, Dec. 7, 1972,
Franklin Delano Roosevelt Memorial,
Independence Hall, April 24, 2005,
Jefferson Memorial, Oct. 4, 2011,
Lincoln Memorial, Nov. 2017,
Washington Monument, May 25 2014,
Washington Monument & White House, Sep. 26, 2003,
CC BY 3.0
Public Domain
CC BY 2.0
Public Domain
Public Domain
Public Domain
CC BY 2.0
CC BY 2.0
CC BY 3.0
CC BY 2.0
Public Domain