The granddaddy of English geoglyphs dates back to the late Bronze Age.

A perilous medieval road leading right into the sea.

Cold storage for agricultural biodiversity.

The narrowest street in the world is in danger of closing up entirely.

Grotto replete with mystical designs laid out in glued shell mosaics.

A church of bones, decorated with 40,000 human skeletons.

Super-heavy Nazi architectural experiment.

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

An ordinary lamppost situated in the middle of Cambridge has an unusual moniker and history.

This tiny river island switches sovereignty every six months as part of a rare, centuries-old agreement.

A man-made slag heap that you can "ski" down, and is home to the world sandboarding championships.

A long-disputed lighthouse built on the wrong side of a Finnish/Swedish island.

The Suurhusen church tower in Germany leans over farther than the famous Leaning Tower of Pisa.

What happened to the three lighthouse keepers who vanished from this place remains a mystery over a century later.

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

A sculpture park of the tossed aside relics of the USSR, from Stalin to a massive Soviet emblem.

The world's shortest street was created by an awkwardly placed hotel.

Giant naked man on a hillside.

A remarkable two-country morph, this town is part of Germany legally but is by all other measures Swiss.

Germany has its very own Centralia, whose spark remains attributed to "spontaneous combustion."

According to a satirical conspiracy theory that persists today, this German city of 300,000 is a hoax invented by the CIA.

This Arctic mining town is home to a cat that's spent years masquerading as a fox.

One of Europe's largest supercomputers is housed inside of a disused chapel.

A maze of crosses marks the jumbled divide between the Netherlands and Belgium.