Volcanic rocks ground down into sand make this Spanish beach as black as night.

These wooden balconies that are both decorative and functional.

A statue commemorating the island's tradition of dancing dwarves in Napoleon hats.

This replica of Columbus's famous ship houses the history of La Palma's maritime importance during the Age of Exploration.

The four landings commemorate a royal visit to Europe's biggest observatory.

These old towers extract salt from the sea.

This whimsical, unique clock has been entertaining shoppers for well over 20 years.

A museum and gardens with unusual plants and a history of progressive programming for the blind.

A saintly relic hidden in a Prague church basement.

This artificial cave looks like something out of a fairytale.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

Two stunning 17th-century libraries and a cabinet of curiosities.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

Real bones which are said to have belonged to a Polish dragon.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

At first glance, this area seems like just another city park, but the lush landscape hides a dark past.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

This sprawling concrete suburb of Kraków was designed by the Soviet Union as the model proletarian city.

Reminders of the Battle of Berlin still scar the railway.

Metro station with a claim to rock n' roll fame.

Neon artworks light up this dark Edinburgh tunnel.

The final resting place of soldiers' loyal canine companions.

A six-ton wedding present for the King of the Scots.