This is not your typical jungle gym.

A wonderfully kitsch bookstore the size of a supermarket.

The final resting place of many of New Jersey's most famous residents, including U.S. history's most in-vogue antagonist, Aaron Burr.

A tribute to Ponce de Leon's supposed quest for eternal youth.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

An abandoned meat mecca now serves as an excellent locale for urban exploration.

From Tintin to the Smurfs, Europe's greatest graphic icons are celebrated in a grand Art Noveau gallery.

Community bookshelf of 25-foot-tall book spines.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

A miniature city, once ruled by the Queen of the Netherlands.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Wisconsin's most celebrated export gets the royal treatment on I-94.

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

2300-year-old Roman road connecting the empire.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.

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

A building so large that it has its own weather.

The third tallest lighthouse in America once guided author Stephen Crane to safety.

Electrical pylon in the shape of Disney's beloved mouse.