This peculiar border irregularity is the only way to legally enter Russia without a visa.

A forest park outside Tallinn full of architectural and artistic curiosities.

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

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

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

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

Estonia's largest creative city is a vibrant bohemian hub located within a former industrial complex.

This Soviet-era "closed town" was a top secret uranium producer often left off of maps.

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

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

Man-made mineral caves house massive bat colony.

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.

The gutted remains of this Estonian mansion are a monument to a tragic love.

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

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.

The building's fluid, wavelike walls are a true feat of architectural ingenuity.