A quiet memorial to the victims of the Soviet-backed communist regime in Czechoslovakia.

This statue points to another unusual companion work of art often overlooked by visitors.

A massive sculpture of an obscure Celtic coin that has become a symbol in Slovakia.

The inverted pyramid design of this station stands out amid Bratislava's urban landscape.

The largest fountain in Bratislava.

In an area known in Bratislava’s postal history, this sculpture sits equipped with a functional postbox.

No one knows the origin of this creepy little stone man with an oversized phallus.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

A sculpture of a beloved local figure, who tipped his top hat to everyone he passed on the streets of Bratislava.

An ode to a soldier who came to town, fell in love, then began making his own sparkling wine.

Launched by Napoleon's soldiers more than 200 years ago, a cannonball remains embedded in the tower wall.

The eccentricities of a former lord include painted pigeons of his manor house, a series of pointless plaques, and a folly built simply to peeve the public.

The last four extravagant street signs of London's historic banking street.

The commemorative stone column conceals a secret laboratory.

Only a few pieces remain of the structure that carried people and goods across the Thames for some 600 years.

The barrel-made lookout from Shackleton's final ship is tucked away in the crypt of one of London's oldest churches.

A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.

A lone medieval church tower marooned among the City of London's skyscrapers

The remains of an ancient Roman teenager are memorialized at the base of a modern London landmark.

Tables of secondhand books fill the inner courtyard of this 17th-century stock exchange.

This triumphal arch celebrating the Sun King's conquest of Lille is a masterpiece of military architecture.

The historic villages and towns of Suffolk are filled with wonky wooden beam houses painted an unusual shade of pink. Unknown to many though, this sweet shade has a bloody history.

This crumbling coast and its teetering tower are literally filled with history, but they are also at great risk of becoming history themselves.

The largest offshore wind farm in the world would be even bigger if it weren't for some pesky birds.