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

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

A look into the Church of Scientology's deeply unfavorable view of psychiatry.

The blinking light atop the iconic landmark has been sending secret messages for decades.

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

The man who voiced Bugs Bunny, Daffy Duck, Porky Pig, and more has a headstone reading, "That's all, folks!"

Resting place of Hollywood's immortals is also site of summer film screenings.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

A 30-foot-high stream of chocolate flows continuously at the Lindt Home of Chocolate.

Use a key to unlock this medieval sewer tunnel.

This massive boulder was hurled into a Zurich church when a gunpowder depot was struck by lightning in 1652.

One hundred years ago this small house in downtown Zürich became the birthplace of the Dada movement.

An obscure walkway dedicated to a scientist who helped pave the way for the world to sit up and take notice of Manchester.

Over 70 independent businesses have set up shop in this former Victorian department store.

Pompeii's less famous neighbor is still revealing her secrets.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

This glass skywalk offers vertiginous views down the volcanic cliffs to the beach below.

These small, triangular, colorful houses are a staple of Madeira Island.

Men in rubber-soled boots serve as your "brakes" on this toboggan ride Hemingway described as "exhilarating."

A micronation on an islet along the coast of a Portuguese island.

This colorful statue welcomes visitors to a Barcelona park.

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

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