This remote Colorado canyon is home to the second-largest collection of natural arches in the world.

A blooming house of worship for the masses.

The Magical World of George Phar Legler.

Miniature art that tells an enormous story.

This bomb shelter-themed bar has barely changed since it opened.

A 150-square-foot masterpiece of American landscape art is the crown jewel of this library and art gallery in Vermont.

The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.

The world's oldest soul food restaurant is also one of its best.

This once-popular otherworldly landscape was formed by one of the largest volcanic eruptions in history.

Metal water storage tank turned ethereal concert hall.

A home covered with elaborate mosaic and other pieces of art.

An open-air museum in a mountain valley features works designed to blend in with—and disintegrate back into—their natural surroundings.

A palatial sculpture park was built illegally and in secret by a self-taught artist over 36 years.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

A charming, homemade vending machine dispenses burgers and sandwiches at this hole-in-the-wall bakery.

A room filled with frescos that make it seem like the walls are crumbling down while giants die in despair.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

Modern art meets modern convenience in possibly the world's most architecturally important public bathroom.

Private collection of art inspired by cabinets of curiosity.

This former lieutenant governor's home is brimming with curiosities.

This seaside Italian village doesn't just look Escher-esque, it actually inspired the mind-bending artist.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

One man's extraordinary topiary garden in a small South Carolina town.