An incredibly salty lake inside the crater of an extinct volcano.

The defense built to protect one of the last found pieces of land on Earth.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

Stunning Roman aqueduct used for 1900 years and still standing.

This massive fiberglass Gulliver turns every visitor into a Lilliputian.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

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

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

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.

One of Malta’s most important Neolithic sites sits in a suburban area south of the country’s capital.

This is one of the very few intact windmills built by the Knights of St. John in the island nation of Malta.

These temples are among the oldest free-standing stone buildings in the world.

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

This spectacular dome managed to survive after being bombed in World War II, in an event known as the "Miracle of Mosta."

These lesser-known Maltese catacombs date back over 1,700 years.

The floor of this spectacular Baroque sanctuary is covered in memento mori.

This Stone Age solar temple aligns with the sun on each equinox and solstice.

When the rain falls, this drain system turns into a musical instrument.

This lonely minaret with an unusual decorative symbol is all that remains of a historic Ottoman mosque.

A 14th-century Serbian Orthodox church that was once converted into a mosque under the much-disfavored Ottoman Empire.

An unfinished Serbian Orthodox church with 1,389 golden crosses planned to represent the Battle of Kosovo.