Böttcherstraße's bells, extolling Nordic virtues and the great conquerors of the world.

The Guardian of Tallinn.

A unique sculpture calls the outside of this steakhouse home.

This medieval Estonian tower provides access to a series of tunnels that have been home to soldiers, punks, and fine art.

These enormous, stern-faced statues greet visitors with lanterns, and sometimes costumes.

A collection of collections ranging from dentistry to minerals.

This irregularly shaped sea fortress has defended not one but three different sovereign states.

Dedicated to the outnumbered Finnish forces who pushed back Soviet forces during the conflict.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

The best place in the world to buy tinned fish.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

Dedicated to the European Sinti and Roma peoples murdered during the Holocaust.

Apartment complexes built into huge repurposed natural gas tanks.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

A stunning architectural yet functional feat, towering over Oslo.

Tens of thousands of tiny bottles stuffed with various items.

In downtown Oslo, a menacing and terrifying relief clings to a church wall.

This floating sculpture of ice is a poignant reminder of nature's power.

This dockworkers' lunch joint has been left leaning by a century of storm floods.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

This red light district plaza memorializes the Fab Four and their historic connection to the area.

Hamburgers are intensely proud of their tunnel beneath the river.

The world's first combination ski slope and power plant.