A historic scientific breakthrough that crosses nine borders.

This abandoned fighter jet launch center is now a haunting street racing course.

This soviet pilot's graveyard is filled with headstones made of airplane fins.

Wars fought and wars won are remembered by these abandoned bunker ruins.

A former imperial sea-fortress and Soviet prison.

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

Relics from an era long gone, sit idle outside this Estonian museum.

This medieval Estonian tower provides access to a series of tunnels that have been home to soldiers, punks, and fine art.

This disappearing geyser has been attributed to witchcraft, but really it's all about rainfall.

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

Mysterious craters may have been home to an ancient cult.

The ruins of an Estonian prison are drowning in the quarry lake where the convicts were once forced to work.

Dedicated to the outnumbered Finnish forces who pushed back Soviet forces during the conflict.

Atop this electronic store resides a massive fighter jet.

The door to the museum holds a unique artifact from the Finnish Civil War.

This building featuring Brutalist architecture has a rich media production history.

The last permanent exhibit dedicated to the Soviet leader.

The church's remarkable frescoes incorporate Finnish artist Hugh Simberg's trademark themes of death and the supernatural.

Fortifications built for a Soviet invasion that never came now sit abandoned in a losing battle against nature.

This disused church, left to the elements of the Arctic Circle's forests is open for exploration.

Roughly 17 million letters to Santa have found their way to this Arctic Circle post office.

If you visit Santa's village, you can get your passport stamped to show you crossed into the Arctic Circle.

This insurance company building reminds customers that witches, bears, and gnomes are out there, best be insured.

A small island dotted with old, historic Finnish buildings.