Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

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.

The home of half the world's population of critically endangered mountain gorillas.

Erotic art covers the walls of the largest ancient pleasure palace.

The walls and streets of the ancient city are peppered with penises.

A crumbling watchtower and a lighthouse overlooks the site believed to be the Sirens' cliff in the "Odyssey."

The glowing blue Nymphaeum of Emperor Tiberius.

Illegal drag racing two stories beneath Chicago’s streets.

A beloved Chicago music venue offering cold beer and lots of “Friendly."

A hot dog stand where the heads are just as hot as the dogs.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

This alley in downtown Chicago held the bodies of over 600 people after the fateful Iroquois Theatre fire.

This historic hotel invented the chocolate brownie.

A gothic church spire sits atop this skyscraper, the tallest church in the world.

The subtle science of a master molecular gastronomist.

A speakeasy takes on Chicago's drinking culture.

Despite many attempts to finish this overpass, it has been abandoned since the 1970s.

In Zanzibar, a historic 19th-century palace is a reminder of the world's shortest war.

Freddie Mercury's childhood home is now a monument to the iconic Queen rockstar.

The farmhouse owned by the Danish author who wrote "Out of Africa" is now a museum honoring her legacy.

Get tall with nature's lankiest beasts and their warthog friends at this Kenyan preserve.

Just outside of Nairobi lies a large estate surrounded by endangered Rothschild giraffes, who have been fed from the window by Mick Jagger and Walter Cronkite.

This 23-foot-tall bear stands amid the hustle and bustle of Hamad International Airport.