The widest waterfall in Europe is a natural wonder and one of the only places where fish are caught in the air.

A railway bridge leading nowhere stands lonely in the middle of a meadow.

Spend the night in 1920s Latvia in this historic recreation and movie set.

Mysterious heaps of stones dot these otherworldly woods.

Built to ward off Napoleon's army, this city-sized abandoned Russian fort is now perfect for urban exploration.

A top secret Cold War bunker hidden beneath a Latvian spa facility is now open for tours.

This remote sandstone cliff has one of the richest collections of Livonian petroglyph marks.

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

Man-made mineral caves house massive bat colony.

This Estonian watchtower looks like a big tree with two giant bird nests on it, complete with a "golden egg."

For the last century, this international border within a small town has appeared and disappeared various times.

This unique eatery offers a taste of Estonia's "Onion Route."

Its collection offers a glimpse into the Russian Old Believers' centuries-old way of life.

An abandoned textile factory on the "island of crows" was home to Estonia's first workers' strike.

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

Walk along the medieval fortifications that have been protecting Tallinn since the 14th century.

This free museum is building a collection of books that are banned, censored or burnt around the world.

A medieval setting reimagined into a unique art alley.

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

This striking memorial is one of Estonia’s most controversial Soviet leftovers.

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

A series of concentric circles represented a bold new experiment in socialist urban planning, and it notoriously difficult to get around.

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

This dizzying tower was built to better broadcast the 1980 Moscow Olympics.