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

100 years later, they're still down there.

A historic neighborhood church is reborn as a psychedelic arts collective.

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

The famous abolitionist’s preserved estate is one of Washington's finest monuments to its great Black citizens.

An eerie, decaying ghost town destined to fade into the forest.

Vacant Beaux-Arts buildings that serve as reminders of a beach town’s glory days.

A completely round house designed for the Atomic Age.

Several times a year, during low tide, two pairs of historic train tracks are revealed on this New Jersey beach.

Step inside Lucy, the world's largest "elephant."

Whimsical artist house in the New Jersey woods.

One of the world's largest model railroads is a mind-boggling achievement.

This tiny New Jersey village has lived many lives but seems determined to remain a ghost town.

Series of storm drains connected to a dark urban legend.

A storefront museum in Asbury Park honoring the Jersey Shore’s deep history of mystery—including the Jersey Devil.

This historic iron-working village is now a ghost town so immaculate that it looks as though it was recently built.

A unique sculpture park that specializes in the huge and bizarre.

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

A grotesque Fiji merman dwells within this traditional Dutch-style building.

A desiccated merman and a walrus penis bone are among the oddities in this eclectic collection of shipwreck treasures.

Enchanting gardens surround a derelict mansion, all hidden in plain sight behind a stone wall.

A wrecked ship dating back to the American Revolution was only recently discovered off the Delaware coast.

A museum dedicated to the strange and extravagant costumes and memorabilia of the mummers, a tradition older than Philadelphia itself.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.