This ambiguous pig shrine is actually a monument to a beloved queen.

This Vietnamese bar doubles as a multistory labyrinth.

The bronzed skull of a beheaded traitor was affixed to the city gate in the 17th century.

This former Masonic lodge has been transformed into part museum, part bar, all awesome.

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

Sail in for a ’dam good slice.

The former home of a mad diplomat is said to still be marked in bloody, arcane scrawls.

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

This unattributed sculpture in Amsterdam is hiding in plain sight.

Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

A historic observatory now an astronomy museum beautifully situated at the moat of the Middle Age city centre.

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

The giant scales in this museum can still tell if someone is one of the devil's brides just by weight.

The ruins of this Dutch castle sit atop a labyrinth of once-secret tunnels and passageways, dating back over 900 years.

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

One of Amsterdam's narrowest houses is located right across the canal from its widest.

An overgrown and largely forgotten cemetery lies hidden within the outskirts of Amsterdam.

Hidden within a Netherlands crater is a stone bed that lets those who lie in it see the sky as a curved surface.

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

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

The attic of a four-century-old canal house hides a clandestine church.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.