Sail in for a ’dam good slice.

This impressive collection of rare books on ancient mysticism inspired author Dan Brown.

This bird-loving brewery is situated in an old municipal bathhouse, nestled beside a 300-year-old windmill.

The last of Amsterdam's original sea level markers remaining in place.

This museum housed in a former brothel explores the past and present of sex work in Amsterdam.

Famed for its pie, this eatery has a hidden tunnel that allowed Catholics to secretly walk to church during the Reformation.

This poignant tribute to the White Rose movement showcases artifacts related to the heroic anti-Nazi struggle.

This beautiful Croatian fortress is haunted by legends of forbidden love.

This Croatian fairytale castle is slowly falling apart thanks to years of neglect.

Where the lovelorn find a home for their sentimental keepsakes.

An abandoned outdoor movie theater in the Sinai desert.

Even King Tut was intrigued by the glass of the Great Sand Sea.

A strange aquarium with stuffed fish, and almost no water for them to swim in.

An abandoned train station in Munich constructed for the 1972 Olympic games.

A stairway to heaven, or to nowhere at all.

This hand-built lake system has become a haven for birds.

This structure, built more than 60 years ago to manage devastating seasonal floods, is known to attract a rare species of freshwater dolphin.

Sacred Buddhist home of some spiritual monkeys.

One of the oldest family businesses in Reykjavík serves lamb-based hot dogs.

Iceland's tribute to its thankless civil servants.

This oceanside Reykjavik spot is speckled with recycled sculptures and large stones.

Iceland's first pagan temple in 1,000 years is underway in Reykjavík.

Some 80,000 Delft Blue tiles line the inside of this Amsterdam walkway.

This large copper bolt represents the benchmark for measuring sea levels in most of Europe.