The largest volcanic caldera in Japan holds an entire city in its maw.

A plaque marks the site directly below the mid-air detonation of the atomic bomb over Hiroshima.

The giant figure on the back of this turtle-shaped temple actually hides a memorial pendulum.

This Japanese national treasure was originally built in 593.

A sculpture made of 10 Cadillacs as a monument to the “Golden Age” of the American automobile.

Final resting place of Geronimo, Quanah Parker, and the first atomic gun ever fired.

A theatre built to house the rowdy Oxford graduation ceremonies became the stage for a debate about God's existence.

Ancient Egyptian wigs, South American feather headdresses, a bounty of anthropological artifacts in Oxford.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

Small ship votives hang from the vaulted ceiling of this port-side church with a Latin inscription on the wall.

One of Canada's oldest museums, the beautiful Redpath has been serving up Natural History and Ethnography since 1882.

The most confusing clock in New York.

Ride the subways of yesteryear.

Detailed facade of a brownstone in Boerum Hill.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

The curios of pharmacist and collector Henry Wellcome.

The remains of the great moral philosopher reside in a university in London.

A cluttered and astounding collection of antiquities and curiosities.

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

One part antique store, one part curiosities hodge-podge.

The world's tallest statue of an American hero.

An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.

An indigenous take on European design creates a stunning visual overload.

An island filled with hundreds of hanging, decomposing, decapitated dolls.