Dublin's "Dead Zoo" serves as a window to Victorian museum design.

This unique sculpture is often overlooked by pedestrians.

Stockholm's tiniest statue is of a small boy looking at the Moon.

The discovery of an old wall led to the creation of this fascinating museum about the city in the Middle Ages.

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.

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

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

Dine on food tied to Viking history and legend at this subterranean Stockholm spot.

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

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

The final resting place for a wealthy Roman family, this tomb might be the best preserved of its kind outside Italy.

Residing along a busy thoroughfare, this sculpture urges passersby to consider the future.

A German apartment building hosting as many trees as human occupants.

Twisted buildings adorn the banks of the Rhine river.

This German fountain of a legendary apple wine-loving drink thief will spit on you.

A rare chance to ride one of the few continuous elevators still in operation.

Carved fountains poignantly placed in parks and in front of special monuments.

After years of being casually peed on by humans, this tree is peeing back.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

The history of German architecture is explored across this fairy-scale mini-city.

Oddly enough, a pair of Wolfs funded the construction of this Little Red Riding Hood sculpture.

This massive statue is the personification of Bavaria and the first colossal statue of the modern period composed of bronze.

The unusually large seat sits atop the base of a ruined temple.

The scars of World War II are preserved on its walls.