The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

It took over half a century but a Russian monument to a famous and tragic space pup finally stands in Moscow.

Museum celebrating the achievements of the Soviet space program.

Dr. Strangelove-esque tours reveal the inside a bunker once reserved for Stalin himself.

Immortal combat in a Moscow museum.

This building holds the embalmed remains of the leader of the Bolshevik Revolution.

This small museum is basically a time capsule of daily life in the Soviet Union.

An abandoned tank sits in an empty London lot as a symbolic middle finger to local city planners.

The childhood home of Earth's alien chameleon is a humble Brixton flat.

The taxidermied remains of a once-great parrot.

Isaac Newton's former home, where the famous apple tree still stands.

A monument to the defenders of the Arctic in Murmansk, Russia.

The deepest hole drilled in the name of science, where evidence of Precambrian life was found.

Below a historic English market town lies a secret underground city complete with kitchens, laundries, storerooms, and an underground lake.

An extraordinary collection of scientific instruments - and Einstein's chalkboard - inside the world's oldest purpose built museum building.

Museum celebrating the history of computers, especially their role in codebreaking.

Home to Alan Turing, the cracking of the Enigma code, and Captain Ridley's shooting party.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

The lab where the scientist made his groundbreaking discoveries is preserved on the basement floor of the Faraday Museum.

Shiny Brutalist box commemorates a pioneer of electricity and houses a railway transformer.

Charles Babbage's proto-computer, painstakingly brought to life.

Stunning examples of Russia's 18th-century wooden architecture.