Man-made mineral caves house massive bat colony.

Once standing on solid ground, this slender beacon is a victim of the very shoreline it was charged with announcing.

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

Once a year, local students "clean" this statue with a champagne shower.

Historic slum of Tartu.

The secret cells in the basement of the KGB's Estonian "Grey House" have been preserved as a grim Cold War museum.

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

This stoic bronze soldier stands as a symbol of Russian sacrifice or Soviet oppression, or maybe both.

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

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

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

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

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

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

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

A giant gorilla made of used car tires used to sit sentinel over a Helsinki college campus.

No matter how many times this community-run sauna gets destroyed, it always rises from the ashes.

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

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

A competition inspired by Stephen King's psychological horror novel "The Long Walk."

Locals rallied to save this beloved mural after someone mistakenly attempted to cover it.

Several cannonballs of mysterious origins decorate two buildings in Stortoget's main square.

Twice a year, this floating library delivers thousands of books to the remote islands of Stockholm’s archipelago.

The Swedish flag over this small naval fort signals that the nation is at peace.