Constructed to use the strong tides of the Potomac River to clear silt from the Washington ... it now also serves as the backdrop to some of D.C.'s best-loved sites. Every spring, the Tidal ...

Constructed to use the strong tides of the Potomac River to clear silt from the Washington ... it now also serves as the backdrop to some of D.C.'s best-loved sites. Every spring, the Tidal ...

The District of Columbia, located on the north bank of the Potomac River, is the capital city of United States. The centers of all three branches of the U.S. federal government are located in the ...