The man who introduced reinforced concrete to the world demonstrated its genius by using it to build his own house.

This Austin music venue is an homage to a legendary figure in the local blues scene.

A store full of vintage and indie toys designed to bring out the kid in even the crustiest of adults.

An Industrial Revolution-era public work that purified water using nothing but sand.

The haunting beauty of this little-visited wreck makes it a true hidden treasure.

An abandoned water park overtaken by the dunes.

This arch made out of whale bones is a remnant of South Africa's whaling history.

Jurassic Park in South Africa.

Tiny pyrophyllite spheres from 3 billion years ago.

Environmentally crucial raptors like eagles and vultures are kept and protected in this massive sanctuary.

Two giant painted cooling towers make for one of the world’s most epic bungee jumps.

A crypt believed by many Congolese to be a center of black magic.

This picturesque round lake is said to be home to the legendary Mokèlé-mbèmbé.

A monument dedicated in memory of the over 100,000 civilian deaths during the liberation of Manila in World War II.

Once a crime hotspot, this refurbished underpass is now home to a bookstore and a mural celebrating the history of Manila.

A failed utopian experiment for British expats in the American South is now a Victorian village frozen in time.

John Hendrix predicted the creation of the "Secret City" built as part of the Manhattan Project.

The secret city built by the Manhattan Project.

This hotel was used during the Manhattan Project to house official visitors.

Enormous lake at the bottom of a unique cave system.

Better known as the "Body Farm," this unique research facility has been studying how human bodies break down since the 1980s.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

A pair of oily black spiders lurk inside South Korea's largest airport.

A bizarre collection of gifts to North Korean dictator Kim Jong Il from the despots of the world.