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.

The last remaining example of the boatmen's perches that once dotted the south bank of the Thames.

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.

A library of only unpublished manuscripts.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.

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

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

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

The U.S. Air Force has an anti-satellite laser weapon.

Believe it or not, the now-ubiquitous California avocado originated in Guatemala.

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

This little town supplies Japan with most of its calligraphy brushes, still made by hand from animal fur.

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

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

A silly medieval mural preserved on the side of a Viennese house.

The forest that inspired Winnie-the-Pooh's Hundred Acre Wood can be found outside London.

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