Vortex-shaped aquarium hosts Europe's largest school of piranhas and other ocean creatures.

Red, white, and blue painted steps along with a Union Jack celebrate the outcome of Gibraltar's 1967 referendum.

The 3.8 billion-year-old rock proves that tectonic plates may have been shifting longer than we thought.

Thousands of letters to Santa get delivered to this mailbox in Greenland.

These eight mummies are the best-preserved human remains ever discovered in North America.

Cave where bat-eating snakes hang down from the ceiling.

Large tower used for simulating radiation of Hiroshima bomb and the tallest object ever relocated.

Come for the boats, stay to explore the intriguing assortment of art.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

The most beautiful Taco Bell in the world even has surfboard parking.

An Old West film set seen in countless TV shows and movies is open for the public to explore.

Is this a portal to another side of the cosmos?

The world's northernmost aquarium looks like it has fallen over.

This lake-bound geographical marker sits at the point where three European countries intersect.

The underground mall's skylights look like they could be part of a spaceship.

A surreal landscape where fanged rocks rise from the ground and the ocean feels like a great mystery.

An American city stranded at the tip of a Canadian peninsula where strict adherence to the "49th parallel rule" became problematic.

This former mining hub holds a surprising abundance of undisturbed relics from the Old West.

Touch an actual dinosaur bone at this eclectic trove of Rocky Mountain treasures.

A tunnel with windows, so you don't miss out on the impressive views.

The highest dunes in California are the most likely place in the area to hear the Singing Sands.

This large pile of traveler-curated rocks by the dry lakebed is a longstanding tradition on the Old Mojave Road.

Despite being a perfectly pleasant place to be, Loyalton can't seem to attract any visitors.

From the sky, a kaleidoscope of color brightens the grey landscape of the San Francisco Bay.