Brass plaques embedded in pavement preserve the memories of those who lost their lives at the hands of Nazis during World War II.

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

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

Admire dozens of life-size animals made from old scrap metal, nuts, screws, and valves.

Structure built from the skulls of vanquished foes.

For over 40 years, this quaint little house has teetered on a rock in the middle of a river.

This memorial park stands on the site of one of the largest mass executions of the Second World War.

This star-shaped military outpost is now simply trying to protect itself from neglect.

A garden in Lisbon filled with giant porcelain creatures.

A chunk of the "true cross" is held in this small Portuguese church where modern day exorcisms are said to be common place.

An abandoned mine now resembles a post-apocalyptic landscape of derelict buildings and blood-red pools of water.

You can cross from one country to another in a single hop on this little bridge.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

Europe's largest collection of matchbox designs is a fascinating exploration of the cultural history of the world.

Rainwater transformed this old quarry into a peaceful pond you won't find in most tourist books.

This medieval monastery represents an architectural blend of eastern and western European culture.

An idyllic traditional timber village on a picturesque hill was built for a film.

This mesmerizing medieval monastery-cave complex sits thousands of feet above ground overlooking a valley.

The ruins of this medieval castle on a foggy hill tell the story of a once-mighty empire.

The bizarre rocks of Đavolja Varoš are the result of natural erosion.

Different sections of the Zemun Fortress were built in the 14th and 15th century as a response to the advance of the Ottoman Empire.

Statues of two of Srem's most well-known animals.

An open-air museum dedicated to tombstones and roadside stone monuments.

A Hollywood-sign replica with a typo on a remote hillside.