One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

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

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

A battle between nature and architecture in the Cambodian jungle.

Macabre astrological automaton clock dating to the late 1400s.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

A New Zealand communications tower stands as the tallest structure in the Southern Hemisphere.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

Deadly scalding and one of the largest hot springs in the world.

This electric green sulphur lake in New Zealand looks like a cartoonish radioactive dump site.

One of the best beaches in the entire world.

This historic Australian bridge was built by convicts with giant stone spikes to prevent cattle from falling off the sides.

Honoring the annual National Cherry Festival.

Granite rocks that concentrate waves into powerful jets.

Aqua white sand highlighted with fiery red rocks.

A clear example of the process of erosion in action.

Nine limestone rock stacks on Australia's "Shipwreck Coast."

A collection of outdoor mystical statues paying homage to indigenous Australians and ecological stewardship.

Putt your way around Australia in a black light environment.

These mythological giants take time out of their busy day guarding a Victorian market to let you know what time it is.

The bullet-banged DIY suit of armour belonging to Australia’s most famous outlaw.

This historic Melbourne bullet factory is fully encased in a massive glass and steel cone.