The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Secret Soviet city once home to Russian cosmonauts and space training facilities.

This newly renovated Soviet-era outdoor exhibition center is bigger than the principality of Monaco.

Perhaps the tiniest sculpture in Saint Petersburg is a little bronze finch inspired by a song.

A scale model of Russia so big visitors are offered binoculars to rent so they can see the whole thing.

A 250-year-old timepiece-automaton adorned with golden mechanical birds, which still sing to this day.

An early-20th-century "dacha" village of quaint cottages curiously located in a modern part of Moscow.

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

World's largest bell sits on the grounds of the Kremlin in Moscow.

Moscow's imposing monument to the Space Age.

Former headquarters of the KGB.

Museum celebrating the achievements of the Soviet space program.

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