A breathtaking viewing platform over the Alps.

The world's oldest known salt mine.

Preserving the research tools, unexpected inventions, and odd collections of generations of college professors.

Every winter, this former planetarium is transformed into a massive, brightly-lit Christmas ornament.

This old KLM airplane cut into three parts was transformed into an eclectic airport gift shop.

This imposing tower named after the mythical sword of King Arthur is considered the tallest freestanding climbing wall in the world.

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

This fairy tale forest hides scenes from some of the more obscure and bizarre Western nursery stories.

This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

The great Danube river starts here.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

This "floating railway" is one of the world's oldest monorail systems.

Ruins of a German castle on top of a towering stone pillar.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

The bust of Romania’s most notorious ruler, Vlad Dracula aka "Vlad the Impaler," keeps watch over the ruins of his medieval court.

Conspiracy theories and occult legends surround this mysterious natural rock formation.

Once an opulent Art Nouveau hotspot, the Constanța Casino is one of Romania's most beautiful abandoned buildings.

A giant portrait of an ancient king looms over the river.

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

The legendary cliffside castle of three-time Voivode of Wallachia, Vlad the Impaler.

A countryside Romanian cemetery filled with colorful crosses bearing lyrical, ironic, or satirical rhymes.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.