A small collection of iguana-infested ruins hides amid Cancún's bustling hotel zone.

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

This Irish show cave is said to have been the site of a Viking massacre that claimed 1,000 lives.

The oldest inn in Kilkenny was established by the first convicted witch in Ireland.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

One of Ireland's most infamous prisons for rebels including men, women and children.

A small marionette collection located within the dark cellars of an 11th-century Austrian castle.

Ugly 18th-century dwarf statues living in a perfectly landscaped Austrian garden.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

Visitors dating back to the 1600s carved their marks in the stones of the iconic tower.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

There has been an astronomical clock on this spot since the 14th century.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

This 11th century tower is said to be the oldest building in Oxford.

This Norman castle was once the site of a Victorian-era prison, and now exists as a luxury hotel.

This centuries-old pub boasts a collection of more than 4,500 snippets of neckties from around the world.

One of Europe's oldest libraries.

Hidden in plain sight, this creepy sculpture watches from above.

Used as an example in one of the first dictionary entries for "museum" in 1706.

The lantern carried by the infamous Guy Fawkes when he was arrested while attempting to blow the houses of Parliament and the King of England to smithereens

A wonderful collection of all things Oz is nestled in the heart of Kansas.

Louisa May Alcott based “Little Women” on her experiences growing up in this house with her sisters.

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

The footprint of a frustrated devil in Munich's Cathedral.