An early 19th-century English style garden hidden in the Rotterdam cityscape.

One of the Leiden's oldest pubs is also the birthplace of the Heineken star.

Hop aboard a charming bog train to explore this rare open-air museum of peat.

The works of poetry's biggest names grace the walls of the city of Leiden, all carefully painted by hand.

An ancient Egyptian temple sits within a modern European museum.

A set of seven houses, each built in a style that represents a European country.

Devious political maneuvering and four ancient, working telescopes are central to the world's second-oldest observatory.

Its town washed away centuries ago, this lonely tower by the sea tells the tale of a mermaid and a curse.

The ruins of a medieval castle that once belonged to one of the most powerful families in the Netherlands.

Tucked away in the Leiden city hall are a group of works by famed artist MC Escher.

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

Rich with fauna and flora, nature-lovers can walk across the sea at this UNESCO World Heritage spot.

A market built atop boats is one of the few floating holiday markets in Europe.

This Netherlands museum holds a gloriously mechanical collection of ornate musical automata.

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

A Portuguese Jewish cemetery filled with stunning grave monuments that date back to 1614.

Inspired by "The Starry Night" this Dutch bike path turns into a glowing work of art each night.

Peek through a transparent pyramid and drink in the mountain made of books.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

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

The Vatican's secret porn-festooned bathroom was painted in erotic murals by one of the greatest artists of the Renaissance.

One of the oldest bridges in Norwich was used during the English witch trials and is said to be haunted.

A mixture of strange symbols, ciphers, words and cryptograms carved in 1876 remain unsolved to this day.

A sanctuary for sickly, stray, or wounded donkeys.