The coldest city in the world.

Siberian ghost town built by gulag prisoners.

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

This frozen-in-time summer home outside Moscow provides a look at Russian life in the 1950s.

A small part of Russia that does not touch any other part of Russia.

A Marxist summer camp full of fantastical statues lies tucked away and forgotten in the forests of Moscow.

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

A remote forest of stone pillars along the Lena river.

Site of the largest impact event to occur over land in Earth's recorded history.

The world's second-largest excavated hole.

The reason for the strange contortions in the trunks of these "drunken" pine trees in Russia is still a mystery.

Moscow's most popular cemetery includes the graves of numerous cosmonauts.

Former headquarters of the KGB.

The villagers of the coldest inhabited place on Earth adjust to unique challenges presented by day-to-day living.

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

Nightmarish example of the unintended consequences of weapons testing.

Legends of time travel and magical woodland creatures bolster the natural charm of this verdant sanctuary in the midst of Moscow.

A little church on a tiny island looks like something from a fairy tale.

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

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

Immortal combat in a Moscow museum.

Thirteen sculptures in central Moscow graphically depicting vices of the modern world.

It's hard to believe the dizzying patterns covering this abandoned mine are completely natural.

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