A quirky bookstore hidden beneath a sea of whitewashed Greek villas.

Giant marble phalluses on the sacred island of antiquity.

This legendary city has been a tourist attraction for centuries.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

The hallucinogenic center of the ancient world.

Monasteries on rock pillars, once accessible only by frayed ropes.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

In the fictional world of Kcymaerxthaere, celestial wonders marked a portal to a powerful route of travel at this site in Madrid, Spain.

A lush indoor jungle fills this bustling Madrid transportation hub.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

A 360 degree battlefield experience.

One of the world's tallest statues is also one of its most hated.

The tallest hotel in Europe.

Former headquarters of the KGB.

Moscow's imposing monument to the Space Age.

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

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

Museum celebrating the achievements of the Soviet space program.

Moscow's other, lesser known kremlin is a fairytale-like cultural complex modeled after Old Russia.