Nikola Tesla's ashes are held in a golden sphere, surrounded by his works.

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.

Relics of Australia's convict past, and a modern scene of unimaginable horror.

Half of a waterfall goes into the river while the other half seems to disappear.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

The "World's Largest Underground Business Complex," a 55,000,000-square-foot city underneath Missouri.

The sign at the garden gate reads: "These Plants Can Kill."

Research station devoted to mysterious floating lights seen in a Norwegian valley.

This everlasting lightning storm may be the world's largest generator of ozone.

Michael Heizer's masterwork in the Nevada Basin.

A bridge destroyed three times: once as a ruse, then in an actual attack, and finally for the movies.

The ship that got left behind.

An underground city of salt.

Ancient human, animal, and geometric figures drawn in the earth.

The internet as provided by a James Bond villain.

Natural time capsule containing an alien ecosystem.

A palatial sculpture park was built illegally and in secret by a self-taught artist over 36 years.

Collection of antique science instruments displayed in recreated 1870-1930 laboratories.

Continuing the tradition of the dime museum in style.

Astounding collection of coin-operated games and automata.

Housing a morgue, rare and confiscated weapons, and autopsy remains, the Vancouver police museum displays the dark side of Canada.

The world's brightest bioluminescent bay.

World's first "penitentiary," meant to be humane, drove men insane.

Church holding the preserved body of a levitating saint.