An abandoned mansion is now a haven for urban explorers.

A model village fit for an emperor.

The laboratory where the Soviet secret police invented exotic poisons used to kill dissidents in hideous and (mostly) untraceable ways.

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

Church built on the site where the last tsar of Russia and his family were killed.

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

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

Egyptian Revival movie palace abandoned for decades and restored in 2013.

The world's oldest bookshop still in operation.

This former lieutenant governor's home is brimming with curiosities.

At the base of the Spring Mountains, a unique nursery packed with desert plants.

The so-called "Father of Las Vegas" had the city's first telephone installed in his office in 1907.

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

This cuddly rodent has a place of honor at a Russian institute for genetic research.

A tribute to Richard Feynman is carved into the land he planned to see but never got to visit.

A collection of iconic Soviet car models on display.

Is it an island or a volcano? That question probably explains why it's uninhabited.

This famous city eluded concrete detection until the early 2000's.

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

Russian researchers who have been excavating ancient squirrel burrows may have brought a 32,000-year-old plant back to life.

A 360 degree battlefield experience.

Dozens of padlock-trees along the Moscow River.

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

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