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

Bubbling up from deep underground is the warm crystal clear water that fills the Warm Springs Pools, America's oldest spa.

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

A curious whirlpool formation supposedly capable of entangling or engulfing branches, tree trunks, or whole rafts full of hapless tourists.

The land is home to swimming ponies and a legendary 18th-century treasure.

One of the few surviving "Wigwam"-themed motels.

The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

This church in Pittsburgh is home to the largest collection of religious relics in North America.

The first custom-designed building to showcase the works of Dale Chihuly is a wonderland of glass and light.

According to local lore, this narrow passageway through two large rocks was accidentally created by the devil himself.

A historic estate packed with George Washington's heirlooms, and its own nuclear bunker.

A local farm's collection of unusual structures from a now defunct storybook amusement park.

A mysterious light floating in the trees of Arkansas may be a piezoelectric effect.

Moonbows over Kentucky.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

This might just be the TARDIS of bookstores.

One of the best places to see feral Colonial Spanish Mustangs in the United States.

Beyond the usual stories that attend old prisons, this one has deep bloody undercurrents.

The universally beloved children's television figure is interred on a high hilltop in one of western Pennsylvania's oldest cemeteries.

Home to drunken tower-climbing goats... seriously.

The "mysteries" of this quintessential roadside oddity were almost destroyed by neglect but were saved by fans of kitschy wonder.

In Florida, these naughty monkeys live on their own mini-monkey Alcatraz.

A secretive collection featuring objects that were designed specifically for U.S. intelligence operations.

This abandoned Civil War fortress is slowly being swallowed by the waters of Lake Borgne.