A volcanic old faithful, Stromboli has been erupting continuously for the last 2000 years.

A somewhat mysterious biomedical museum housed inside a Spanish university.

Medical history museum featuring a lovely doctor's office from the 1800s.

An ancient rock engraving shows Aboriginals used their advanced knowledge of the stars to hunt and gather.

A museum dedicated to the exploring past, present, and future innovations.

These Nubian pyramids are strange and unique, even by pyramid standards.

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

This unusually shaped mountaintop tower looks like a UFO floating over the city.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

A deadly ancient portal to the underworld.

A pub that is literally in the middle of nowhere, but continues to do business.

Three bridges straddle a stream, one stacked upon the other.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Stunning examples of Russia's 18th-century wooden architecture.

Enormous underground chamber built to detect 'ghost particles' of the universe.

A fifth-century temple improbably built into the side of a cliff.

The loneliest island in New York.

A serpentine highway twists and turns over the treacherous Norwegian Sea.

These azure waters were thought to lead to the Mayan Underworld.

An ethereal glowing blue ocean cave in Croatia.