A theme park attraction designed to turn your children into LARPers.

This cave holds a surprisingly colorful variety of geological oddities.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

A place to eat for on-the-run agents and espionage enthusiasts.

Robots, lasers, and whoopee cushions, oh my!

An oasis of calm amid the chaos of the boardwalk, the museum traces the heritage of this beloved beachside amusement park.

A simple midtown bar was once the home of a secretive and exclusive club staffed by "bunnies" under Hefner's strict rules.

This castle-like building in Manhattan helped destigmatize cancer in the 19th century.

A whimsical village of unique treehouses resides in a Washington forest.

Allowing humans and fish alike to migrate from freshwater to saltwater and back again.

Spanning an elevation of 160 feet and containing 388 steps, this is Seattle's longest staircase.

The museum calls itself the "National Museum of the Paranormal" and is full of eerie oddities.

Despite its lavish ornamentation, and wholesome lifestyle of its devotees, this mountain commune has faced its share of issues.

Hikers can still stroll beneath the long conveyer of this abandoned mining facility hidden in a West Virginia river gorge.

One of the last full-orchestra recording studios in New York City and an acoustical marvel.

A trove of century-old litho stones from the Puck Building's printing days were discovered behind a cellar wall, and are now hanging in the store.

"Call for the doctor, call for the nurse... Vote!! said the lady with the alligator purse."

The gravestone of the suffragist leader attracted extra visitors during the 2016 election.

A park filled with vibrant mosaics created by more than 300 folk artists.

255 feet of suds, scrubbers, and blow dryers.

The water in this preserved area spawns vegetation that gives it a deep green color.

The narrowest house in America is seven feet of pure spite.

Continuing a tradition of movie magic on the site of America’s oldest continually operating movie theatre.

Legend says that these tall basalt pillars are the petrified wives of a trickster god.