Inside this Krakow church, an explosion of psychedelic color.

An underground city of salt.

Extremely famous in his native country, this Cracovian painter is all but unknown beyond Polish borders.

Remnants from a time before electricity.

Once the last route taken by condemned prisoners.

The oldest of the three remaining bridges in England with buildings on top of them.

Inside this chapel, Victorian jailers took the separate system to new levels.

Some of England's last cave dwellers lived and worked within this huge cave.

The western face was supposedly left clock-less to snub the Welsh.

Picturesque ruins once held off mighty armies.

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

The largest fountain in Bratislava.

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 memorial stands at the intersection of the rivers Morava and Danube.

A series of bronze circus performers spread throughout a Slovakian shopping center.

Also known as the Blue Church, the building was consecrated to the daughter of Andrew II.

A once-fairy tale mansion now stands in a state of disrepair.

According to the local legend, these boys and ducks were turned to stone by an angered water goblin.

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

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

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

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

A sculpture of the beloved author surrounded by characters from his fairy tales.