The vast, legendary catacombs hold secrets much stranger than stacked bones.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

The celebrated eyesore created by starry-eyed sweethearts.

Giant eggs, walls of bread, and nightmare surreality mark the largest collection of works by Salvador Dalí.

Of course Salvador Dalí lived in a castle...

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

This extraordinary geological oddity resembles human-made pavement.

Granite rocks that concentrate waves into powerful jets.

Children's playground hidden under a big pink and blue cap.

One of the first big sculptures anywhere in Australia.

Roadside display for a popular fruit and vegetable stand.

Three-story concrete ram with a permanent gift shop.

Relics of Australia's convict past, and a modern scene of unimaginable horror.

This massive water spout has been luring visitors for hundreds of years, some to their death.