The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Try not to get slimed in Tribeca.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

This southwestern historic site was designed and built by an artist who wanted his work to "feel at home."

Miniature art that tells an enormous story.

America's only nuclear missile silo open to the public.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

See massive fossils that are over 200 million years old in northeastern Arizona.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

This glass-stain Mary attracted thousands of pilgrims until her head was shattered by a vandal with a slingshot.

Washington's iconic carousel has a nice piece of Civil Rights history.

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

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

A magical place that lets you play in and explore the world of Studio Ghibli.

World's first "penitentiary," meant to be humane, drove men insane.

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

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.

A luxuriant botanical garden below sea level.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A beautiful oddities shop crammed with strange and morbid curiosities.

This quirky curiosity shop takes its cues from the world's bazaars.