A treasure trove of Renaissance-era funerary art in a Roman church built on top of Nero's grave.

An ancient Egyptian temple sits within a modern European museum.

This massive collection of taxidermy is full of specimens collected by missionaries during their international travels.

This historic Amsterdam bar used to accept sailor's monkeys as payment.

Cat art as far as the eye can see.

A curious collection dedicated to human and animal anatomy and pathology.

Lavish royal estate punctuated with heated greenhouses.

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

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

This functional solar system model was inspired by the famous Eisinga Planetarium.

In the Netherlands, one of the world's largest private car collections can be found.

Scale model of St. Peter's Cathedral (Rome) in the middle of a small Dutch town.

The place where houses are born.

A dream-like maze full of strange art, surreal spaces, and fantasy landscapes to get lost in.

Pull up and have a drink at a museum filled with hundreds of years worth of shipwreck artifacts.

A UFO-shaped event building originally intended to be a science museum showcasing the future.

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

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

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

The world's only museum devoted to the wonders of fluorescence.

An eccentric artist's abode in this small Italian town has been transformed into a surreal temple of mosaic madness.

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.