A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

One of the famous Czech artist's lesser-known Prague installations appears to be a glowing fetus affixed to a drainpipe.

A bus with a butt and biceps to put Olympic athletes to shame.

The soulless eyes of 82 bronze children stare on forever in remembrance of a horrifying World War II massacre.

This former quarry is now a picturesque gorge that hides a sunken lake.

Op-art architecture designed for happiness.

An exquisite Baroque church in Vienna's old town.

A mechanical clock built in 1914, with a rotation of 12 historical figures on its face.

In the middle of a Vienna square, Roman ruins dating back some 2,000 years are on display.

The townhouse where the "Blood Countess" Elizabeth Báthory started her murderous career.

A tribute to the women who quietly kept the local steelworks alive during both world wars.

Climb to the top of this windmill for a scenic panorama and up-close look at wind energy production.

This French ghost town from World War II has been left as a memorial to German atrocities during World War II.

A 14th century bridge built as a fortress, where the devil lurks on one of its towers.

Bordered by forest on three sides and the ocean on the other, the Great Dune of Pilat is the highest sand dune in Europe.

A medieval church with largest and oldest collection of Renaissance frescoes in France.

Historic medieval fortified city in southwest France.

This ancient Roman town was revered for the healing waters of its sacred spring.

This historic island prison holds one of the dungeons from the Count of Monte Cristo even though it is a work of fiction.

Sky ships, planes, and portraits left as unique tokens of hope and thankfulness.

This modern museum of Mediterranean culture is surrounded by a surreal concrete honeycomb.

This saucy statue once caused outrage among locals.

A beautiful discovery site of prehistoric burials.

This small village claims to be independent from Italy because it was left out when the nation was unified.