A vortex fountain that seems to rise out of the ground.

"World's largest scrap metal sculpture" stands in an outdoor sculpture garden in the middle of Wisconsin.

Over fifty whirling pools left by the glacial age.

Legend holds eating just one of these black eggs can add seven years to one's life.

Exploring the wilder, more passionate sibling of Erg Chebbi feels like discovering a secret sun-kissed planet from another galaxy.

Giant animal sculptures are created with the rice straw leftover from the fall harvest each year.

Norway has built what may be the world's most beautiful public toilet.

A full-scale replica of a 1774 colonial settlement in Kentucky.

An underwater restaurant, surrounded by a coral reef.

A pre-Hispanic pyramid in the middle of a tourist district in the Canary Islands.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

A statue of a boy looks up at where the famous rival to the Leaning Tower of Pisa once stood.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

This Stockholm light tower can be controlled by anyone with a smartphone.

An Italian hillside ghost town.

A botanical garden full of thought-provoking contemporary sculptures.

Living trees form the structure of an open-air palace.

A marvel of Byzantine engineering under the streets of Istanbul.

The Hanshin Expressway goes right through its 5th, 6th, and 7th floors.

A lake at the bottom of the ocean.

This meticulously extracted nervous system allegedly came from a 19th-century custodian who donated her body to science.

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

A unique beach made of a myriad of multi-sized pebbles.

An enormous concrete structure built over a nuclear crater.