Old ships and machinery fill a historic harbor in the city that's home to Europe's largest port.

This hotel was once home to a steamliner company and became the final rest stop for Europeans heading to the New World.

The Rozenberg wind wall in South Holland makes for smooth sailing through the Calandbrug canal.

Go deep down into the earth to experience the world of Welsh coal miners.

This local emblem is the oldest and largest dragon tree in the Canary Islands.

According to the Guanches, the aboriginal people of the Canary Islands, the king of evil lives inside this volcano.

This unique rock formation is quite the local celebrity, although one day it may come crashing down.

A large collection of solar and night-time telescopes dot a small area on the Teide mountain range.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

The interior of this church has been turned into a memorial to locals who died in Croatia's Homeland War.

The local club's soccer field is practically surrounded by UNESCO-protected monuments.

A once-fairy tale mansion now stands in a state of disrepair.

The world's greatest slide descends 18 stories from this looping mountaintop viewing platform.

The world’s narrowest house makes for an awkward, four-foot-wide living space.

At night, this memorial illuminates a ghostly outline of a footbridge that connected two sections of the Warsaw Ghetto.

Order “Proletariat’s Cutlet” at this communist-themed restaurant allegedly once visited by Lenin.

An abandoned Nazi explosives plant founded by the inventor of dynamite is now an underground museum.

This massive monument has been telling the time for 150 years—at a slight angle.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.