This community on a small Venetian island has taken to painting their houses in bright neon hues.

Hidden in the hills of Hollywood, this secluded Oz-themed garden is dotted with dozens of thrones.

A battle between nature and architecture in the Cambodian jungle.

This massive wooden building contains a giant Buddha, healing pillars, and tame deer wandering the grounds.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

Tubing through a cave lit with glowworms is a magical underground experience.

Private collection of art inspired by cabinets of curiosity.

An underwater city for the dead.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

This weird abode has inspired everything from the "House On Haunted Hil" to a robot hunter's pad.

A seemingly endless landscape of pure salt stretches far across Bolivia.

A beautiful 62-acre Catholic shrine and botanical garden.

Bioluminescent firefly squid light up this Japanese fishing port.

One person's lost luggage is another person's treasure.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

The beautiful baroque library of the Hapsburg empire.

An island filled with hundreds of hanging, decomposing, decapitated dolls.

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

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

The longest hedge maze in the world.

A book collector's dream, this Toronto bookstore has the world's first "Biblio-Mat," a random book vending machine.

A prohibition-style speakeasy takes up residence in the last Victorian residence in Hollywood.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.