The oldest family-run restaurant in the United States is a living museum of New Orleans dining history.

This mountain trail inspired Nietzsche to complete his magnum opus.

Designed as a labyrinth, this subterranean prison was crafted without bars or doors.

The site where Poe "in great distress, and ... in need of immediate assistance" likely died.

A tropical rainforest designed to resemble a scene from the monumental film.

This statue of an eagle taking flight welcomes visitors to Langkawi.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Next to the Malaysian Prime Minister’s office stands this rose-colored mosque.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

A crumbling hospital from the 1850s on Roosevelt Island.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

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

The castle where the Marquis de Sade lived out his darkest fantasies.

One of the tallest waterfalls in Africa is also home to a population of monkeys who enjoy the waters and the occasional guest.

Twelve hundred stone carvings guard this off-the-beaten-path Buddhist temple.

The smallest island in Manhattan is a manmade landfill dominated by a Buddhist peace arch.

This subterranean oyster house has been the pearl of Grand Central Station since 1913.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

The highest rapid transit station in the world.

Mosaics, storks, and brothels—this ancient city has it all.