Tiny castle in the middle of the Rhine made you pay to pass.

Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

Also known as Uncle Karl, the beloved bronze copper keeps a watchful eye on St. Stephen’s Basilica while people rub his lucky belly.

Few of the many visitors to this resort town know of its hidden Maya ruins.

The ancient tomb acts as a calendar that keeps perfect time.

Famously misunderstood wonder of the ancient world

Two small markers remember the Alamo's feline protectors.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

A church of bones, decorated with 40,000 human skeletons.

This spooky statue sits outside a famous Prague theater.

The remains of a failed subway in upstate New York is now an underground graffiti bunker.

An antique cemetery in New York, this land is home to any number of famed corpses.

The home, museum, and death site of Kodak's influential founder.

One of Amsterdam's narrowest houses is located right across the canal from its widest.

A mysterious spot where the laws of gravity seem not to apply.

This Canadian monument to the man who invented the telephone allows visitors to get up close and personal with the artifacts of his life.

A 400-square foot model of historic Quebec is the playing field for a state of the art light and sound show.

A contemporary fresco movement illustrates the region's rich history.

Little island known for its massive beachfront "flowerpot" pillars.

A tunnel that brings more than a century of history to life from the deepest parts of the Niagara Gorge.

Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

With well over 130 falls and cascades to brag about, Hamilton, Ontario has earned its stripes as the waterfall capital of the world.

This seemingly cursed monument is dedicated to one of Canada's great war heroes.