Three columns of volcanic rock shoot out of the ocean.

Pink, packed sanctuary and home of the world's fullest-time Elvis fanatic.

The internet as provided by a James Bond villain.

A Belgian self-built tower inspired by the Bible and ancient civilizations.

Natural time capsule containing an alien ecosystem.

A German apartment building hosting as many trees as human occupants.

A small flooded ghost town with a few scattered structures remaining.

Astonishing collection of helmets, scientific instruments, and medical models.

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

The home of 1.5 million wood letters for printing is still a functioning workshop.

Continuing the tradition of the dime museum in style.

Funhouse of found art and participatory sculpture.

Astounding collection of coin-operated games and automata.

These curious caverns have been home to mushrooms, gangsters, and disco.

Abandoned anti-ballistic missile base.

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

Taking the 3D art experience far beyond blue and red glasses.

A layered tribute to the work of mosaicist Isaiah Zagar.

Tenacious mummies survived dental problems, eternal entombment, and more than their fair share of devastating fires.

World's strongest whirlpool.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

Huge hole looks down onto an underground beach populated with sea lions.

This hunter-gatherer architecture is believed to be the oldest religious complex known.

Structure built from the skulls of vanquished foes.