Towering high above the neighborhood of La Candelaria, the church is easily recognizable by its distinctive red-and-white striped facade.

Outdoor escalators and art have helped change what was once a notoriously dangerous part of Medellín.

At more than 5,000 years old, these structures are among the oldest free-standing stone buildings in the world.

With a floor made of thick glass, this observation deck offers a full view of Sunwapta Valley's mountains and rivers.

The giant statue and its model solar system honor the native Pole who declared that the Earth revolves around the Sun.

Dozens of elegant ceramic tiles decorate these ancient walls, each displaying the Lord's Prayer in a different language.

As the Dead Sea continues to deplete, massive sinkholes open along its banks.

Monumental sculptures guard many of the graves, transforming this necropolis into an open-air fine art museum.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

Legend says this sacred tree was a gift from goddess Athena.

When a supermarket opened up shop within a medieval building it became protected by UNESCO on a technicality.

One of the best-preserved Roman amphitheaters is still used today, but for less brutal events.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

The geographical center of Budapest is marked with a 10-foot-tall stylized zero.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

A Jenga-style cylindrical tower of books that appears to go on forever.

A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

The Guardian of Tallinn.

This medieval Estonian tower provides access to a series of tunnels that have been home to soldiers, punks, and fine art.

In the center of Wrocław's old meat market stands a somber tribute to the city's livestock.

Though many were skeptical at first, these animal-specific routes across the Trans-Canada Highway have been a major conservation success.

Special benches that play Chopin's music are scattered throughout his native city.