Heralded as one of the prettiest castles in all of Czechia.

Europe's largest natural bridge has a 19th century royal chateau built into its side.

A mocking tribute to the past and modern leadership of Prague.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

It appears as if a man is standing behind this giant airport clock, painting the hands in real time.

In the heart of Luxembourg's "little Switzerland" weaves a breathtaking natural sandstone canyon with a mythological past.

A monument to a beloved aquatic folk hero in the Irish town of Dingle.

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

Southern Italy's spinning top village.

A fortified palace in the shape of a ship on the Thiou river.

This hanging crocodile is thought to be the "dragon" that once plagued a Czech city.

A peculiar clock commemorates a historic victory won by ringing the noonday bell an hour early.

A beautiful window with the old Tesla Radio company logo.

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

Macabre astrological automaton clock dating to the late 1400s.

A Jenga-style cylindrical tower of books that appears to go on forever.

A beautifully preserved and hidden 16th-century alleyway, tucked behind an unassuming door.

Rare wooden escalators lead deep down into an otherwise staggeringly monotonous tiled tunnel.

The compass on its front was a handy tool for 17th-century merchants who needed to know the direction of the wind.

Colorful and chaotic stacked hotel in North Holland.

The largest 19th century panorama in the world still in-situ.

A 'living museum' in Leiden, the oldest of its kind in the Netherlands.

A grassy pyramid named after a French battle.