Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

Copenhagen's celebrated theme park and gardens.

The ruins of an ancient stadium that hosted gripping chariot and horse races.

Once the grandest synagogue in medieval Spain, it now stands as a memorial of the 15th-century Jewish exile.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

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.

Bordered by forest on three sides and the ocean on the other, the Great Dune of Pilat is the highest sand dune in Europe.

Historic medieval fortified city in southwest France.

In one of the smallest countries in the world stands an original Salvador Dalí sculpture.

The former home of a conniving 17th century politician is now a high-end hotel.

For more than half a millennia, this automaton has rung an hourly bell.

The most elaborate of 12 medieval arched doorways to the old city of Burgos.

This remarkable museum sprung from one of the most important prehistoric archaeological sites in the world.

The facade of this 16th-century building is decorated with carvings of 300 seashells.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

This beautiful spit of land was once the summer playground of the king of Spain.

A historic Christian shrine nestled within a spectacular natural cave.

Made up of 3,200 recycled glass bottles, this tree pays homage to Asturia's love of cider.

The oldest Roman lighthouse still in use.

This panoramic lift provides a futuristic ride up San Pedro Mountain.

This enormous censer uses a pulley system installed over 400 years ago.

A 12th century church completely covered in shells.