A vast overgrown cemetery, once known as one of London's "Magnificent Seven."

Tiny effigies of the victims of Edinburgh's famous Anatomy Murders.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

360° views of the city plus five floors of optical illusions and hands-on science.

A 30-acre garden inspired by the principles of modern physics.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

Known for the tunnel that leads visitors to the water.

The romantic botanic tunnel feels like a well-kept secret.

An island filled with hundreds of hanging, decomposing, decapitated dolls.

These azure waters were thought to lead to the Mayan Underworld.

Extraordinary sculpture garden created by an eccentric English poet.

High atop a Mexican rainforest mountain, this ancient pyramid once drew pilgrims countries away.

A uniquely robust and historic look at Mexico's omnipresent dance with Death.

The winter home of millions of migrating monarch butterflies.

If you can look past the nearby sewer pipes, this urban sinkhole grotto is a mini-paradise.

Stained glass windows bathe this botanical garden in cosmic light.

A lake at the bottom of the ocean.

These strikingly colorful paintings were created by a mysterious Mesoamerican civilization.

Three sinkholes filled with warm, crystal-clear water reached by a horse-driven cart on an old train track through the jungle.

This cluttered cantina is famed for its cheese-spiked, raisin-flavored liqueur.

A lonesome Moai stands in a small Italian town some 9,000 miles away from its Easter Island brethren.

A great example of the inventive canal bridges that were deliberately split down the middle.