Micro-nation based around a nine-story high illegally built tower.

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

The world's first ice hotel is still one of the most elaborate and beautiful.

From Coke II to Google Glass, this exhibit features some of the most spectacular commercial flops.

Catalonia Tradition: Beating the hollow Christmas log until it defecates in your fireplace.

Mountain where Jesus was first tempted by the Devil.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

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

This submersible road connecting a French island to the mainland is lined with safety towers for when the tide strands travelers.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

All unmarked mute swans on the Thames are owned by the Queen per a tradition that began in the 12th century.

A replica of the steam engine that hauled Queen Victoria's Royal Train is on display at Windsor.