Senators used to relax in the nearly forgotten marble tubs now hidden in the U.S. Capitol Building's basement.

This stately mansion, built in 1787 by America's first Secretary of the Navy, is rumored to be one of the most haunted buildings in Washington, DC.

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

This sandwich shop has a century-old elevator behind a sheet of plexiglass.

Once the supplier for noteworthy projects like the National Cathedral, this old brickworks now lies abandoned.

A computer bug so primitive it was an actual insect.

This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.

A rotating cast of guys and dolls in front of a Washington, D.C. building.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

A wondrous old library overlooking the nation's capital.