The storied English village that pretended to be insane inspired NYC's nickname and the fictional namesake in the DC Comics universe.

A mapping error in the 19th century made loggers think this section of the forest was underwater.

This enormous storm barrier is one of the largest moving structures on Earth, with each arm taller than the Washington Monument.

There was a top secret plan during World War II to seal a group of soldiers inside the rock.

Beautiful stained glass depictions of the history of human flight fill this surprising chapel.

A suburban street in Anchorage doubles as a runway, and each home has its own airplane hangar.

Housed in the university planetarium, the thousand-strong collection of tiny towelettes includes a used one from the hosts of Car Talk.

Step back in time at this 1950s display home, built to showcase once cutting-edge electric amenities.

Sections of the iconic limestone columns have been left uncleaned as a reminder of the city's polluted past.

The subterranean "lake" below the Paris opera house inspired the Phantom of the Opera's lair.

Centuries before the modern seismograph, Armenian monks measured quakes with this tilting pillar.

A library of only unpublished manuscripts.

An obscure public service from the U.S. government that redeems burnt, moldy, and soiled old greenbacks.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

Bronze plates placed around this Scottish fishing village form a true-scale model of the solar system.

The South African dialect's complex history is immortalized in stone, in one of the world's only monuments dedicated to a language.

Thousands of abandoned statues of deities are taken to this hillside in southern Hong Kong.

This natural wonder drops 16 stories straight down through rare flora and streaming waterfalls.

A rapidly disappearing glacier filled with extinct grasshoppers, perfectly preserved in the ice.

Daredevil repair workers can worm their way out the access hatch, loop ropes over the apex and rappel down the monument.

150 or so scrounged-up lamps, chandeliers, and lanterns light up this alley in central Athens.

An ancient instrument used to measure the waters of the Nile so Egyptian farmers would know whether to expect famine or flood.

A painfully obvious spy house sits right across the street from the Russian Embassy.