Legend has it this spring formed at the spot where a medieval Swedish king was killed.

If there is one thing you don't want to be in Sweden during Christmas, it's a Yule Goat.

Stockholm's narrowest alley is barely over two feet wide.

It houses the remains of a 17th-century version of the Titanic.

Holy Grotto of Montserrat Monastery holds one of Europe's mysterious black Madonnas.

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

This cemetery features modernist statues as strange as its name.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

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

Elaborate tile work in this railway station tells the story of Portugal.

The ruins of a megalithic monument sit right in the garden of a luxurious Maltese resort.

This seaside pine grove features an exclusive watchtower that presents amazing views.

This statue is dedicated to the animal cosmonauts that perished during space flight experiments.

This charming Latvian lane doubled as Baker Street on the Soviet Union’s version of Sherlock Holmes.

Latvia's symbolic mountain-shaped national library is home to millions of cultural tomes.

Pilgrimage site for star-crossed lovers.

Drink wine handed out through a window as part of an age-old tradition.

Secret refuge and museum of the Duke of Florence.

Hungarian self-built castle.

Hungarian mummies in beautiful painted coffins.

Budapest's Communist-era statues, banished to the suburbs.

If you visit Santa's village, you can get your passport stamped to show you crossed into the Arctic Circle.

Roughly 17 million letters to Santa have found their way to this Arctic Circle post office.

Be(w)ar(e) the moat around this historic Czech castle.