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

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

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

The world's tallest statue of an American hero.

Constructed in the 1920s, this former pencil factory is now an office building.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

This pub was 238 years old when it decided to revamp its image: It started serving Thai food.

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

The London pub overlooks where the Mayflower was moored before setting sail for the New World.

The bones of two medieval royal lions were discovered at the historic fortress.

This one has sailed five times as far as Sir Francis Drake's famous ship.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

The remains of the great moral philosopher reside in a university in London.

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

Hear the quietest sound from across the dome.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

An abandoned mine where dreams of quicksilver trickled away over 75 years ago.

Named for the biblical warrior, the largest castle in Israel actually dates to the Middle Ages.

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

Empty, but not abandoned, this cavernous Brooklyn loading dock was once considered the largest individual building in the world.

The world's first and only escalator for lazy bicycles and their daunted riders.

One of the most breathtaking railways in Europe also takes one of the steepest climbs, from fjord to mountain plateau.

A taste of Middle Earth, in the middle of the Bayou City.

The return of something once considered a basic part of life.