These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

The oldest giants in Catalonia are now displayed in a 14th-century Gothic church.

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

More than 200 eclectic sculptures surround the artist's home.

This museum is a portal to 20th-century Denmark.

An old Danish political institution where members of government can grab a drink off the record.

Stare out over the lagoon and beyond from this 10th-century campanile on the island where the city of Venice began.

This small cemetery and its chapel are located in the middle of a traffic circle.

The surviving remnants of a destroyed medieval church now stand in a public park.

This site is both a remarkable reminder of the town's mining history and a fantastic government blooper.

Stuck in the middle of a modern Madrid city block are the remains of a 19th century sports complex.

A temple to modernity, tucked away amid Barcelona's more well known museums.

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

Believed to be the remains of the lost Temple of Minerva, this nymphaeum has been known by its misnomer to this day.

A heavily politicized roundabout discussing the state of a heavily politicized country.

A menacing statue of this mythical creature can be seen at the legendary site of the monster's lair.

This striking structure is the Socialist-modernist centerpiece of a former Soviet spa resort.

A small monument in Lithuania marks the geographic center of Europe—or at least one of the claimants.

Museum dedicated to "the man who moved the Earth."

This hidden collection of everyday objects illustrates life within communist Poland.

This centuries-old wooden wonder was built in less than a year and is one of Europe's largest timber-framed churches.

This shuttered power plant is now Turkey's first industrial archaeology museum.

Fantastic lake on the heart of a fault line.

Ancient serpentine sacrifice holder that has stood the test of time.