A 16th-century horror show built in a lovely Italian garden.

This Italian foot path winds through the mountains via 52 individual tunnels.

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

Sitting on an Italian hilltop is this surreal fortress built by the mad inventor of electrohomeopathy.

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

The Bloemen Route, or “Flower Route”, stretches 25 miles through prime Dutch tulip country as a result of “tulip mania,” the world’s first economic bubble.

Oldest Museum of the Netherlands is a true cabinet of curiosities.

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

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

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

This miniature take on the Kremlin is one Dutch man's retirement project.

Go inside a revolutionary, cage-less zoo where 70 species of monkeys roam free alongside their human visitors.

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