Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

One man's personal kunstkammer, museum and shop.

These bronze pamphlets remember a remarkable group of Germans who fearlessly opposed the Nazis in the very center of their power.

Among the ostentatious rococo ornamentation of this church, an image of death cuts the life-thread.

A stairway to heaven, or to nowhere at all.

A spectacular rainbow of stained glass makes the "Pink Mosque" one of the most beautiful in Iran.

The tower in this 1,000-year-old mud-brick village seems to vibrate for no apparent reason.

A dormant lightning machine equal to all the power in Russia.

Former estate of Lenin, now home to his death mask.

One of the largest collections of socialist realist art shows the surprising depth of the official art of the Soviet Union.

The "Mystery and Company of Merchant Adventurers" is an Elizabethan-era hangout in Moscow.

Some Moscow residents once claimed the bizarre, contorted mass of metal on top of the building was used to manipulate minds.

The world's first museum dedicated to the work of game-changing naturalist Charles Darwin.

A Russian museum dedicated to the household staple, the samovar.

Stalinist skyscraper built with help of cryotechnology.

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

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

Long before air conditioning, Persian architects found an ingenious way to cool off.

Located within a historic park, the beacon is the oldest standing structure in Miami.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

A model village fit for an emperor.

An 18th century wonder of the world, lost in WWII, re-created at the Catherine Palace.

An ever-growing literary collection housed in the apartment where the Russian author penned his final novel.

This late-brutalist masterpiece everyone forgot about was originally created to get the proletariat jazzed about the arts.