The evolution of recreational vehicles and motorhomes is on display in the “RV capital of the world."

At the foot of a waterfall lies a peaceful swimming lagoon and evidence of over 60,000 years of human habitation.

Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

Wonderland replication in progress by one persistent man.

A beautiful but toxic fountain of mercury.

This semi-secret storybook hedge maze is also the oldest garden in the city.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

A floating cat sanctuary on an Amsterdam canal.

Cat art as far as the eye can see.

Andy Griffith's hometown has made itself up to look like the fictional town of Mayberry.

This bright yellow relic is the final survivor of a short burst of seashell-shaped petrol pumps.

This roadside attraction has been serving out its fair share of hearty folklore and chaos since 1858.

A former Oz-themed attraction that has fallen into disrepair, but still holds some of the original magic.

An abandoned village that doubled as "The Hunger Games"' post-apocalyptic wasteland is up for grabs.