A multiversal transit station located right below a highway interchange.

Once seen as a bit of an eyesore, this sculpture has become a staple of downtown Houston.

An early 20th-century bullring converted into a modern shopping center.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

Saint Joseph was said to heal the deaf and blind, but it was a much smaller miracle that got him canonized.

Turntable anonymously received orphans, alms, and groceries.

On the wall of this medieval square, a symbol of the Spanish Inquisition.

This former Baroque palace on the historic Calle Montcada is a rare architectural gem and was once the meeting place of an aristocratic scholarly society.

Barça football fans might see the insignia hidden in a church window as a divine sign.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.

Possibly the oldest church in Barcelona, this basilica has its pagan and Christian mythologies all mixed up.

A pair of gigantic baby heads greet passengers at Atocha Station.

A lush indoor jungle fills this bustling Madrid transportation hub.

One of Madrid's oldest trees, with a long and colorful history, resides in El Retiro Park.

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

Catch a scenic view of Warsaw's Old Town from the top of a centuries-old dumping ground.

The stunning interior of this Gothic church is covered in ornate gold details.

Ancient catacombs form the foundation for this Rococo orgy of a church.

This giant sculpture made of trash is a critique of society's wastefulness.

The history of drinking is told through 1,800 cups, chalices, and glasses at this exhibit.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

This hollow steel globe is the second-largest in the world.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.