The only structure left with direct ties to the Salem witchcraft trials of 1692.

An collection of Chinese propaganda posters from 1949 to 1979.

The bizarre rocks of Đavolja Varoš are the result of natural erosion.

A scenic overlook of a pit mine hundreds of meters deep filled with blue water.

David Sedaris called it "The greatest shop in the world."

Cockroach Museum features roach celebrities and live hissing cockroaches.

Collection dedicated to brands, packaging and advertising.

Largest man-made excavation on earth!

A cabinet of curious mathematical models and old calculators.

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

An Arizona museum with a collection of pharmaceutical oddities, including a jar of a gangster's chewed gum.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

A self built castle built by a salt worker in Brazil.

A towering spire in the fortress of Kalemegdan honors the victorious armies of Serbia during their struggles against the Ottoman Empire.

Grottoes, sculptures, and recycled ceramics permeate what was once just a small farm in France.