This is not your typical jungle gym.

Less a museum than a bizarre fantasy world created by artists and engineers.

A historic house in St. Louis was plagued by a series of suicides committed by family members involved in a successful brewery.

The boulder on which Alexander Hamilton laid his head after a deadly duel can still be visited on the New Jersey coast.

A bit of retro transportation flair preserved in the world's largest department store.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

This museum offers an actual time machine back through Colorado's past.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

When it comes to handsignals (and colonialism) rock always beats scissors.

The most accurate timepiece in the world.

The privately owned cemetery that holds room for Washington's finest when they step down from life.

A haunting tribute to pioneering photographer Clover Adams.

The United States Capitol's former columns still stand.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

A downtown park built on top of unclaimed graves.