These fantastically named natural pools look like something out of a Scottish myth.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

A tiny, unassuming park in Tampa that belongs to the Republic of Cuba.

Florida's oldest bar was once a morgue, complete with a hanging tree and gravestones.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

This elegant arc of a waterfall marks a religious turning point.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.

This expansive bridge in the Canadian wilderness was originally just built for friends.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

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

The yawning maw of this pagan visage is said to bite off the hands of liars.

See massive fossils that are over 200 million years old in northeastern Arizona.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

A mysterious castle built as a monument to lost love.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

The world's longest known cave system.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

Pompeii's less famous neighbor is still revealing her secrets.