This late-brutalist masterpiece everyone forgot about was originally created to get the proletariat jazzed about the arts.

A man-made island fort that has housed soldiers, scientists, and ravers.

Inside the world's largest seed bank, WWII botanists elected to starve to death rather than compromise their collection.

This endearingly discomfited urinating statue commemorates the sneaky pees had by us all.

A subterranean house of worship carved right out of the bedrock.

This irregularly shaped sea fortress has defended not one but three different sovereign states.

The mile-long pier stretches from a ruined fortress out into the Baltic.

Guests become prisoners on a visit to Latvian prison.

This ornate church has survived Nazi and Soviet occupation, including a short stint as a Soviet-era gymnasium and cinema.

These crumbling Latvian forts make for some haunting seaside ruins.

Mysterious craters may have been home to an ancient cult.

This behemoth bovine guards an Estonian town and is a memorial to the lost species.

Only a fragment of this 15th-century Dance of Death survives today.

Spend your honeymoon where the Devil had his wedding.

The oldest church in the Estonian capital is home to over 100 fantastical cemetery coats-of-arms.

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

Legend says lovers who hold hands while venturing along this stone jetty and kiss at the end will remain together forever.

The remains of an entire Roman city can be explored in this interactive museum.

300 years of pharmaceutical history on display.

Hungarian self-built castle.