A 300-ship graveyard, with a few still visible at low tide.

A psychedelic labyrinth on the San Francisco bay.

A dream-like maze full of strange art, surreal spaces, and fantasy landscapes to get lost in.

A maze of crosses marks the jumbled divide between the Netherlands and Belgium.

An artsy hidden staircase leads to breathtaking views of San Francisco.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A winding path built in secret on the edge of the continent.

The neighborhood church casts a breast-shaped shadow that locals have come to call the “two o’clock titty.”

The tea room that pushed the boundaries of adorable straight into...we can't find the words.

Its buzzing collection honors vibrator history.

Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

Museum about life, death, and cannibalism in the Stone Age.

One of the largest burial mounds in the Netherlands and Belgium.

Colorful boxes placed over the dead are left to rot and crumble.

This cemetery features modernist statues as strange as its name.

The Cimetière des Chiens et Autres Animaux Domestiques is one of the oldest pet cemeteries in the world.

Two gravestones clasp hands over the religious divide.

A small town Romanian cemetery filled with darkly humorous gravestones.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

The Avenue of Mausolea is a series of grand palatial tombs.

Visit the ancient, mysterious Roman catacombs ... in the Netherlands.