Pilgrimage site for star-crossed lovers.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

Giant topiary dog once played a role in a terrorist bomb plot.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

The incorrupt tongue of the patron saint of lost things is venerated in this basilica.

Two stone columns flank the grand Venice square, but there were supposed to be three.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

A half-mile-long stretch of medieval forts built after a devastating pirate attack persists amid the modern port city.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

Stockholm's deepest subway station is also a stunning ecological wonder.

Sweden's "good old days" painstakingly re-created in a model village.

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

Early habitat dioramas and home of the elusive gaff, the skvader.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

The last permanent exhibit dedicated to the Soviet leader.

A cathedral resurrected from the ashes of one of Europe's greatest urban fires.

This insurance company building reminds customers that witches, bears, and gnomes are out there, best be insured.

Architecturally stunning library serves as the hub of Finnish scholarly life and culture.

An alien church provides much needed silence in the midst of a Finland shopping center.

This endearingly discomfited urinating statue commemorates the sneaky pees had by us all.

A subterranean house of worship carved right out of the bedrock.

An abstract monument to a symphonic composer.

Villas that once served as playgrounds for the rich now fall away in decay.

A giant gorilla made of used car tires used to sit sentinel over a Helsinki college campus.