Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

This 14th century wine cellar is home to the oldest barrel-stored wine in the world.

Museum celebrating the ocean, with the largest wunderkammer dedicated to sea exploration.

Sweden's first Viking city is also the site of thousands of burial mounds.

Outside a Viking museum sits a modern-day runestone made by a Swedish runemaster using traditional methods.

A museum that dives into Sweden’s maritime past through preserved shipwrecks and interactive exhibits.

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

This beloved wartime mascot has been honored with not just one, but two statues.

The world's northernmost aquarium looks like it has fallen over.

This functioning parish church is also the site of many concert performances due to its wonderful acoustics.

Over time, this castle grew to encompass the entire island.

This former KGB building is now a museum memorializing the people who suffered during the Soviet regime.

A creepy statue of a hooded ghost hauls itself up from the water in a historic Lithuanian city.

Lithuania's outdoor sculpture trail of wooden folk art.

A narrow strip of land is home to the tallest migrating dunes in Europe.

The statue of a legendary giant who carried Christ and shouldered the world's sins.

A former Latvian headquarters of the brutal KGB secret police is now open as a grim reminder of their atrocities.

This celebration of Latvia’s freedom and independence avoided demolition over half a century of Soviet occupation.

The oldest housing complex in Riga is a mini timeline of architectural trends.

For the last century, this international border within a small town has appeared and disappeared various times.

A wealthy aristocratic family built this Disney-worthy, fairy-tale castle.

Learn to drink tea like an Estonian at this museum.

The largest lake in the Faroe Islands seems to be held hundreds of feet above sea level thanks to an optical illusion.

This mysterious, medieval cathedral remains unbuilt but fiercely protected.