Hermit's Castle in Achmelvich, Scotland

Scotland is renowned the world over as a land of dramatic scenery steeped in history, with many ancient castles to explore. However, on a windswept headland in the middle of nowhere is perhaps one of the most interesting and unusual castles of them all.

Despite its rather garish, Brutalist style of angular geometric shapes, the “castle” fits well into its surroundings with a tapestry of pebbles and shells etched into the concrete. The interior is equally bizarre. As visitors squeeze through the narrow opening, they will find a small room containing a concrete inset deep enough for a mattress.

According to legend, the castle was constructed in the 1950s by David Scott, a renowned architect from Norwich, England who was drawn to the rural nature of the Highlands. The castle stands around seven to eight feet tall. 

It's believed Scott spent six months in secrecy on the project, buying materials from local fisherman and bringing it to the lonely outcrop in his open-top boat. After this herculean effort, it is said that the architect only spent a single night in the building, before vanishing back to Norwich never to return.