A wooden replica of France's famous tower.

Abandoned Soviet base once stocked with short and medium range missiles pointed at western Europe.

A trio of giant wooden megaphones turn up nature's volume in this Estonian forest.

This centuries-old wooden wonder was built in less than a year and is one of Europe's largest timber-framed churches.

Two stunning 17th-century libraries and a cabinet of curiosities.

Some of the world's only freshwater seals live in one very special lake in Russia.

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

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

This Russian religious complex is a Frankenstein's chapel that includes influence from almost all the major faiths.

Intricate wood carvings on an island in Siberia.

This massive glowering Lenin head gazes out over eastern Siberia.

Climb atop one of the world's longest and heaviest trains for an unbelievable journey across the Sahara Desert.

This scale model of our solar system hid in plain sight for years before a physics team sought out all the planets.

This working replica of the 'Friends' coffee shop is more accurate to the show than the set itself.

Ming Dynasty necropolis raided during the Cultural Revolution.

The abandoned hospital whose elaborate ghost stories cover up the dirty truth - an uneventful sanitation issue and other mundane reasons for its demise.