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

A unique two-level bridge designed to honor a king.

Large, airy hallways hide within an impenetrable fortress that beckons urban explorers.

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

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

This once-derelict building is now one of the most beautiful bookstores in the world.

This museum offers a journey back to the Belle Epoque era of Romania.

Historic beer hall in Bucharest with magnificent stained glass and a lively folk band.

The preserved arm of a third-century sorcerer is believed to have the power to lift curses and spells.

This memorial to the victims of the Romanian Revolution of 1989 is often compared to a potato on a skewer.

Stuck in the arcade of Casa Isolani are three arrows of mysterious origins.

A massive line that stretches across the floor of Bologna’s largest church was created by a 17th-century scientist to measure the movements of the Sun.

This building features dozens of faces along its facade, although one is a bit chilling.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

The bones of prehistoric animals and early signs of human habitation have been found inside Malta's "cave of darkness."

The eyes and ears of this tower keep watch over Malta’s Grand Harbor.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

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

This huge metal monument is slowly being stripped to its concrete skeleton.

Festival of Perpetual Life and Rebirth.

Twelve towering statues once destined for Pécs Cathedral, now sheltering under arches.

This truly palatial work of Communist-era architecture now sits crumbling on a Croatian beach.

The only natural cave bath in all of Europe.