Nestled between a college and a golf course, the garden is home to more than 2,500 rhododendrons.

An eerie, decaying ghost town destined to fade into the forest.

A marble Lucifer hides behind the pulpit of this Gothic cathedral.

The larger of two volcanic peaks rising out of the crystalline waters of the Caribbean.

Near this coastal cave stands a small memorial to the hermit who made it his home for three decades.

Where America's first doomsday cult awaited the end of the world.

In Costa Rica's cloud forest, the roots of a woody ficus create a botanical bridge.

A 13th-century stronghold that has fallen into ruin.

Read a book with a glass of wine at this classically restored bar.

A 2017 crowdfunding campaign saved this historic castle from being destroyed.

The Siege of Naarden ended in 1814, but the cannonballs embedded in the town church remain.

Paths are maintained, but trees have taken over plots.

Despite being burnt down multiple times, the ruins of this South Carolina church are still standing.

This cave was once thought to be a hiding place for the devil.

400 million years of erosion shaped these fascinating seaside caves, which made an appearance on 'Game of Thrones.'

A magically clear, blue river that seems to spring from nowhere.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

Eighty million natural history specimens call this gargantuan museum home.

Hundreds of hidden passageways weave through the old quarters of Lyon.

This California museum is home to one of the largest collections related to the 'Treasure Island' author.

This small section of the Sleepy Hollow Cemetery is rotten with famous authors' graves.

The Wright Tavern is possibly the most important building in Concord Massachusetts to the American Revolution.

Yale University's home for rare works, including the mysterious Voynich Manuscript.