A small Rwandan workshop where you'll find traditional works of art—made from cow dung.

The city is full of whimsical portals to another world.

Hell on Earth is actually a small town in Michigan where anyone can be mayor for a day.

Enormous small-business mecca in the Midwest, serving dozens of artists.

The Beaux-Arts aquarium boasts a vast collection of saltwater and freshwater fish on an island in the Detroit River.

The bones of an old zoo crumbling in the shadow of a new one.

One man's attempt to create an artistic wonder on a run-down block in Detroit.

This massive subterranean fissure is known as the "underground Grand Canyon."

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

Bridge that died in war and was resurected.

A tiny church on a man-made island in the Adriatic.

Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

Morocco's Argania trees are infested with nut-hungry goats.

This one-time health resort was used by aristocrats around the world.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

A musical instrument played by the sea.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

This small monument marks the divide between the Atlantic and Indian Oceans at the southernmost tip of Africa.

Formerly known as the Malay Quarter, Bo Kaap is a colorfully-painted suburb located in the “Mother City” of South Africa.

This African beach is home to thousands of rare mainland penguins that are known for their annoying voice.

Raging waters have created a strange geological site that looks like something off of a progressive rock album cover.

A century and a half of research in the sciences and natural history, still going strong.

Golden Gate Park's historic collection of plants.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.