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

Construction of Barcelona’s iconic (but controversial) church was finally 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.

Thousands of slain Soviet soldiers are buried within the shadow of this enormous obelisk.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

Also known as the Blue Church, the building was consecrated to the daughter of Andrew II.

The blood-soaked ruins of the castle where the murderous Blood Countess was walled in alive.

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

Longest road tunnel in the world features an air treatment plant and the illusion of daylight.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

A favorite with sightseers and locals alike, this Norwegian funicular provides easy access to a stunning view of Bergen and its environs.

The world’s largest street art museum.

If you ever wanted to touch a medieval mercenary’s three testicles, look no further.

Two stone columns flank the grand Venice square, but there were supposed to be three.

A new sculpture calls attention to climate change in the centuries-old city it threatens.

Where Venice's gondolas go for a tune-up.

This Roman statue is missing a limb from when the Venetians stole it from Constantinople during the Crusades.

Those who own or stay at this 500-year-old, allegedly cursed house often meet terrible fates.

Go inside to really appreciate this 500-year-old technological masterpiece.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

According to Greek mythology, this natural spring is the home of a freshwater nymph.

Italian cave with exceptional acoustics and an unsavory history.

A volcanic old faithful, Stromboli has been erupting continuously for the last 2000 years.

In the early Roman Empire, people deemed traitors and criminals were tossed to their deaths from this rock.