Hundreds of skulls and bones at the largest skeleton museum in the country.

The timeworn "Yankee Stadium" of the fastest game in the world isn't going anywhere.

This small Key West museum is packed with dozens of artifacts that illustrate the life of the iconic playwright.

Get up close with some alligators at this roadside farm attraction.

A lone gunner's station is all that remains of a replica Spanish Fort in Florida.

This small museum gives visitors a chance to soak up the history of the "sponge capital of the world."

An underwater statue of Christ blesses the depths off Key Largo.

After the attack on Pearl Harbor, rocks and fossils from every U.S. state were collected into a pyramid of national unity.

Florida castle built with aluminum printing plates.

A gleaming white tower in ornate Indian style soars above the low-slung bungalows of north Tampa.

One of the largest ossuaries in Spain is packed from floor to ceiling with bones.

Hidden well off the beaten path in Catalonia is this crumbling medieval castle that is slowly being covered in graffiti.

Bordered by forest on three sides and the ocean on the other, the Great Dune of Pilat is the highest sand dune in Europe.

An isolated village literally built into the crevices and rock formations of a mountain.

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

This awesome Spanish castle is so fantastical it was actually used on Game of Thrones.

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

A breathtaking canyon offers stunning views and frightful pathways through an ecological paradise.

An enchanting monastery in the Spanish countryside appears lifted from a fantasy tale.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

This whimsical winery by Antoni Gaudí looks ripped from the pages of a fairytale.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Famed architect Antoni Gaudi built this generous thank you gift to a friendly host who housed him during a job.