The Guardian of Tallinn.

An alien church provides much needed silence in the midst of a Finland shopping center.

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

An abstract monument to a symphonic composer.

A small island dotted with old, historic Finnish buildings.

Hamburgers are intensely proud of their tunnel beneath the river.

Hamburg's first legal sex work is relegated to a gated street that still does not allow pedestrian women.

This contentious squat has stood through fire, violence, and government intervention as a hotbed of leftist protest.

Remnants of an exploded schooner and wrecked submarines form a breakwater.

An unsettling sculpture of a boy hanging out in a street in Ghent has been baffling visitors for years.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

A man throwing a giant severed hand towers over Antwerp’s main square.

This legendary giant, born from vegetables, terrorized townspeople and cheated local children in games.

Rare wooden escalators lead deep down into an otherwise staggeringly monotonous tiled tunnel.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Single runway interrupted by a busy road that cuts across its middle.

The Isle of Wight’s “Island Line” serviced by former London Underground trains from the 1930s.

A statue paying homage to a world-record-setting aviator who disappeared under mysterious circumstances.

Overlooking the seaside town of Margate stands a tribute to an artist's lover.

This curious Tudor-era castle was once home to Napoleon's greatest adversary, the Duke of Wellington.

A line of iron bollards with colorful, handknitted cozies fitted over them.

This artificial lake surrounded by Brutalist architecture served as a stand-in for futuristic Britain in Stanley Kubrick's 'A Clockwork Orange.'

An ornate and disused early 20th-century building has been given new life as a fully operational structure, complete with offices, oyster bar, and a furniture retailer.

Flying high, this unusual hornet statue celebrates the local soccer team formerly owned by Elton John.