Hear the quietest sound from across the dome.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

An unusual round church in London with a Templar past.

Famously misunderstood wonder of the ancient world

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

The sign at the garden gate reads: "These Plants Can Kill."

These fantastically named natural pools look like something out of a Scottish myth.

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

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

A towering monument to war, located on a beautifully peaceful hill.

One of the world's heaviest musical instruments towers within a popular urban park.

The world's first clock to use set theory as a measure of time required the invention of a new light bulb just to maintain its obtuse measurements.

Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

Floating swimming pool within a moored vessel.

Where once there was a train station bathroom, there is now this German burger joint.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

The most visited, and possibly most controversial, museum in Germany.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

An eerie, derelict amusement park in Berlin.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.