The first all glass and steel residence in the United States.

The final resting place of infamous outlaw Clyde and Marvin Barrow.

This downtown Dallas art installation is always on the lookout.

This unacceptably tall building was the real reason for Washington, D.C.'s skyscraper ban.

A historic ruin just 20 feet away from a busy highway onramp.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

The hidden offices underneath Memorial Bridge have been locked up since 1976.

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

The institution is sitting on a goldmine of 21,000 paints, varnishes, pigments, and primers preserved for posterity.

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

This lovely pocket park is one of the most under appreciated in D.C.

The most decorated dog of World War I is preserved in the Smithsonian.

The Byzantine, pre-Columbian, and medieval art at this stately mansion are some of the most under-appreciated collections in D.C.

Current docking place of the SS United States, the fastest transatlantic ocean liner.

The origin of this mechanical boy was a mystery until he revealed his maker by writing it in perfect cursive.