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

A beautiful but toxic fountain of mercury.

This semi-secret storybook hedge maze is also the oldest garden in the city.

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.

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

First founded in 1472, this is the oldest bank in the world. Its history may explain why we call financial institutions "banks."

One of the largest squares in Europe contains an entire artificial island.

Three underground crypts and a pointed arch under the bell tower make this cathedral unique among Romanesque churches.

Numerous stone coffins from different centuries, lined up in a sixth century basilica.

A devastating landslide accidentally created this tourist hotspot.

This artistic temple brings together multiple architecture styles, but is only an example of one.

An island on the Venetian Lagoon hosts this stone chair that has nothing to do with the King of the Huns.

The people of Padua pledged to construct this church if the city was spared from destruction during World War I.

The tomb of the mythological founder of Padua is not hidden in some obscure crypt, but stands right in the middle of the city square.

One of the oldest and most significant collections of Ancient Egyptian archeology outside of Egypt.

The home of a neoclassical master is now a shrine to his chosen art style.

Destroyed numerous times, this centuries-old bridge has always been rebuilt with its original design.

The roof of this ancient mausoleum is made from a single Istrian stone weighing a massive 230 tons.

When a massive landslide hit one of the world's tallest dams it created a tragic environmental disaster.

This deconsecrated church has seen many uses, from a tobacco storehouse to a cinema.

A medieval, mosaic-lined baptistry built by a heretical Christian sect.

The pile of books behind the dignified writer gave the statue a most undignified nickname.

Psychoanalyst Carl Jung reported a paranormal experience after visiting this mosaic-lined Roman baptistry.