This museum is a music lover's introduction to the iconic venue.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

Swarms of butterflies cannot compare to the awe inspired by the publicly-funded nakedness once displayed in this sunken garden.

The "Key of Keys" for Washington, D.C. and the apocryphal landing place for the military campaign that started George Washington's career is now at the bottom of a well.

Garments from across the globe call this hidden gem home.

When it comes to handsignals (and colonialism) rock always beats scissors.

One of the largest artillery pieces in the world sits in a Washington D.C. parking lot.

North America's largest accredited model railroad museum.

This bronze statue commemorates the strange and beloved mascot of UC Irvine—the only university to be represented by a giant anteater.

This bridge over D.C.'s Rock Creek Park is sometimes called the "Buffalo Bridge" because of its four buffalo sculptures, which were cast from a single piece of bronze.

The legacy of a wealthy executive and his wife, this little-known art museum features works by Picasso, Monet, Renoir, Cezanne, and more.

The story behind this beloved toy—named for Theodore Roosevelt and owned by his grandson—is more complicated than you might guess.

The "lovely red Vega" of the legendary record-settling pilot.

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

Cold War intelligence agents monitored communist embassies from an attic in a former pigeon coop.

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

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

A Civil War fort in the middle of Washington, D.C. has been swallowed by a forest.

Sip creative cocktails in the former vault of the Riggs Bank.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

Home to items never before seen by the public.

This house is a mosaic of tiled artwork sourced from local artists.

A giant Troll lurks under one of Seattle's oldest bridges.