A striking 12th-century-style castle built on the edge of a cliff.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

A magical and peaceful ruined Cistercian abbey in what is now southern Belgium.

A little sculpture with a large wardrobe.

Disused seaplane hangar gets a second life as the jaw-dropping home of Estonia's museum of maritime history.

A scenic UNESCO site that doubles as a habitat for various forms of wildlife.

This ominous Albanian fortress houses tanks and downed planes as a reminder of their victories over Western imperialism.

A naturally beautiful, seemingly bottomless deep blue spring.

In the summer, the area around this sculpture transforms into a vibrant concert venue.

A statue honors the children who fought Nazis in Poland.

Legend says this is actually a heartbroken prince waiting for his true love's kiss.

A menacing statue of this mythical creature can be seen at the legendary site of the monster's lair.

This bell stars in a tragic love tale and is said to make wishes come true.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

Holy Grotto of Montserrat Monastery holds one of Europe's mysterious black Madonnas.

These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

Structure built from the skulls of vanquished foes.

An 11th-century Byzantine church with medieval Serbian history and spectacular views.

A Red Cross memorial museum at the site of the Niš concentration camp that operated for four eventful years during World War II.

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

This 14th century castle withstood years of battle but is now sliding off the hills into the Danube.

Order “Proletariat’s Cutlet” at this communist-themed restaurant allegedly once visited by Lenin.