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

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

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

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

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

The reconstruction of this prominent building fulfilled a long-written command.

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

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

A black cat protests the City Guild in Riga's Old Town.

The Battle of Atlanta in 360 degrees, featuring a corpse that bears a striking resemblance to Clark Gable.

One of corporate America's best-kept secrets is also one of the most publicly displayed.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

Three columns of volcanic rock shoot out of the ocean.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

An encyclopedic collection of mammal penises.

Iceland's tribute to its thankless civil servants.

Iceland's largest geothermal mud pool is a little bit haunted and a little bit dangerous.

Walk in the footsteps of the gods and straddle two tectonic plates.

The final resting place of more than 200,000 people, this is one of the largest cemeteries in Europe.

An underground city of salt.

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

This medieval cathedral houses stained-glass windows featuring saints and pretzels.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.