An apparition of Virgin Mary in Herzegovina.

This fortified town dating back to the 1400s is often described as an open-air museum and is a protected National Monument of Bosnia and Herzegovina.

One of the very few mosques built by the Ottomans still standing in Croatia is now a Catholic church.

The interior of this church has been turned into a memorial to locals who died in Croatia's Homeland War.

The local club's soccer field is practically surrounded by UNESCO-protected monuments.

This pedestrian bridge in Croatia is a sleek, ship-inspired design with a fun net and social spaces.

This fountain has a growing (animal) population, and might also be growing in size.

This ancient Roman aqueduct once funneled water to Diocletian's palace.

A wonderfully strange collection of 500+ stuffed frogs doing people things.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

Split's smallest church, and one of its oldest, has been reconstructed inside the city's Roman walls.

When a supermarket opened up shop within a medieval building it became protected by UNESCO on a technicality.

A former bank seized as a sniper vantage point during the Bosnian War is now a secret graffiti art gallery.

The last remnant of a controversial statue at Cape Town University.

The engine block of a British Royal Mail Ship marks the spot of her demise, caused by the Great Gale of 1856.

Engineering ingenuity during the battle of Gibraltar.

Many of the tombs contain victims of yellow fever epidemics.

These quaint stepping stones traverse the river that connects three of England’s most beautiful lakes.

A beautiful window with the old Tesla Radio company logo.

This column celebrates Rome's victory over the Goths, and may be the oldest Roman monument in Istanbul.

This crucial gathering spot along the "hippie trail" still displays old notes between traveling beatniks and backpackers.

Climb a steep hill in 90 seconds on the second-oldest urban subway in the world.

The legendary luxury train passage is commemorated with a charming museum inside its former eastern terminus.

The most metal church of all time was built in record time because of an international, pious pissing contest.