Rusted cars, trucks, and buses form a fascinating collection of Soviet-era machinery.

First point in the Struve Geodetic Arc, a 19th century undertaking to measure the Earth's size and shape.

A historic scientific breakthrough that crosses nine borders.

Two well-hidden huts let animal lovers spend the night among the bears, wolves, and other predators of the forest.

A decommissioned submarine base makes a great space for graffiti art.

"There's nothing there," and other lies the KGB told us.

The widest natural waterfall in Estonia is a sight to see in all seasons.

A former imperial sea-fortress and Soviet prison.

Disused seaplane hangar gets a second life as the jaw-dropping home of Estonia's museum of maritime history.

One of the oldest lighthouses in the world has been in continuous use since it was first built in 1531.

This small Estonian hill is covered in hand-made twig crosses that are said to bring good luck.

A wooden replica of France's famous tower.

Two old windmills got a new life as oversized sculptures of a man and a woman.

The world's most active stratovolcano is almost always erupting.

Morocco's Argania trees are infested with nut-hungry goats.

In this desolate valley resides a gorgeous set of rocks sporting a technicolor design.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

As the Dead Sea continues to deplete, massive sinkholes open along its banks.

Tokyo’s only Vaudeville-cuckoo clock–steampunk-Victorian curio cabinet time piece.

The castle where Martin Luther secretly translated the New Testament from Greek to German while in hiding.

As lake waters recede, a German village reemerges after more than a hundred years.

This mine is home to the largest man-made hole in Europe.

This temple to the sturm and drang of Richard Wagner contains a dragon's cave and reptile zoo full of living "dragons."

A ruined castle stands atop a hill surrounded by dragon lore.