The world's oldest soul food restaurant is also one of its best.

Amid the sprawling Defense Intelligence Agency Headquarters is one of Washington's least accessible museums.

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.

Seemingly unremarkable items like empty sushi trays, chef hats, and freshness stickers are being preserved so future generations can look back on this beloved cultural import.

These recently uncovered walls are all that's left of Washington, D.C's first defense contractor.

Perhaps the most scandalous statue of America's first president.

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

A computer bug so primitive it was an actual insect.

Government testing at the asylum briefly explored using marijuana as a "truth serum" on Nazi prisoners of war.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

The oldest continuously operating fish market in the United States.

When it opened during the final years of the embargo, all the drinks and cigars were free.

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

A lovely aquatic park built by a one-armed Civil War veteran who made a fortune from lotuses.

This grand gothic brewery has been pumping out suds for over a hundred years.

Home to items never before seen by the public.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

Site of the 1879 Cheyenne Outbreak and the site where famed Sioux chief Crazy Horse met his fate.

A fascinating collection of art made from petrified wood and fossils by two octogenarian twin brothers.

Roaming bison and a spectacular view at the highest point in Nebraska.

This erect, phallic geological spire wasn't always named so domestically.

European castle ruins in an American state park are actually the product of death and grief.

A hidden oasis in the heart of Minneapolis is also an Important Bird Area.

A giant granite cross remembers missionary Father Frederic Baraga, and his safe passage across an angry Lake Superior.