A palatial sculpture park was built illegally and in secret by a self-taught artist over 36 years.

King Ludwig I's collection of beautiful women.

An Ethiopian "Jerusalem" featuring a church hewn out of a single rock.

An eccentric garden of sculptures crafted in India decorate an Irish green space dedicated to Alan Turing.

Monasteries on rock pillars, once accessible only by frayed ropes.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

Two stunning 17th-century libraries and a cabinet of curiosities.

Hear the quietest sound from across the dome.

A hands-off space for graffiti artists to hone and display their skills.

A museum of magic with a Sadist past.

A sacred well steeped in Pagan roots on the West Coast of Ireland.

More gold than anywhere else, ever.

Rare collection of medieval books under lock and key.

The small cliffside monastery known as the Tiger's Nest is said to be the meditation site of an 8th-century Buddhist master.