This eclectic, mosaic-clad home includes a bamboo ping-pong loft and a "Whispermaphones" intercom.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

This psychedelic tromp l'oeil seems to be beckoning drivers to crash into a wall.

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

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

An amazing example of early-20th-century architecture, this church features marble transported from Utah.

Largest Roman Catholic church in North America.

The United States Capitol's former columns still stand.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

A historic cemetery with unique artwork, a Civil War fort, and also happens to be the site of the Battle of Bladensburg.

Once a thriving business district, this former shopping area is now an urban ghost town in the heart of the city.

One artist’s scheme to expand museum viewing hours into the evening led to the illumination of an entire city.

Fascinating museum dedicated to the under-appreciated medical history of urology features some wince-inducing devices.

The development and impact of electronic media showcased in a picturesque farmhouse in Maryland.

A Maryland museum dedicated to Black history, housed in a historic church.

The remnants of a wooden-hulled fleet built and abandoned in WWI, now home to a thriving ecosystem.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

The skeletal white beams stand as a monument to religious dissent.

An old train trestle re-imagined as an Egyptian obelisk.

These strange large stones served as a campsite and lookout post for generations of Native Americans.

A replica of where the Last Supper was held.

This nine-story building can be played like an instrument.

Rare videos and memorabilia await visitors inside this unique store.

A handful of beehive kilns are all that’s left of a historic brick-making empire.