Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

This former charity hospital for elderly clergy houses some of Seville’s most treasured paintings.

The world's largest wooden structure.

The final resting place of the great navigator, or maybe his brother.

Single runway interrupted by a busy road that cuts across its middle.

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 iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

Commonly acknowledged as the only public monument to the Devil himself.

An ancient Egyptian temple in the middle of Madrid, Spain.

A rare set of strings by famed instrument maker Antonio Stradivarius is on display in the Royal Palace.

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

A unique tribute to the millions of animals who served and died for the British military.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

The palatial McDonald's that inspired Wesley Willis.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

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

This historic hotel invented the chocolate brownie.

At Chicago's revered Field Museum, visitors are invited to learn about and literally explore DNA.

This museum celebrating the almighty dollar lets visitors literally stand in the shadow of a million bucks.

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

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.