Once home to more than 50 displays of freshwater fish.

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.

This small town specializes in a rainbow of corn snacks.

This fountain was designed to honor the man who helped bring water to Barcelona.

One of the oldest hospitals in the Americas is now decorated in hallucinatory murals.

This structure was moved nearly 40 feet while people continued working inside it.

The corner walls of a primary school showcase a Mexican version of memento mori.

At the base of the Spring Mountains, a unique nursery packed with desert plants.

Known as "Toronto's Flatiron."

On the upper deck of this church-owned parking garage stand eight pillars topped with different Catholic saints.

One of the few places where you can explore a 1918 paddlewheel steamboat from stem to stern.

A dazzling display of lights and crystals.

This once-booming Gold Rush town is now home to a herd of feral donkeys.

Thousands of artifacts relating to human sexuality, including the world's largest sex bike.

An imposing pair of sphinxes stand guard outside this Egyptian Revival tomb.

The final resting place of the great navigator, or maybe his brother.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

Colorful, cheeky signs spill out of legendary New Orleans folk artist Dr. Bob's Bywater studio warning you to "Be Nice—Or Leave."

This monument marking the center of Mexico might be more political than geographical.

Mexico's largest collection of masks is found in the ruins of an abandoned convent.

Hotel designed around a 16th century Mexican bullring.

The spectacular subterranean collection includes dazzling minerals, including a piece of "kryptonite."

This grand yet little-visited tomb seems almost carved into the hill it sits on.

These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."