This series explores the world's most secret and remote homes - from hidden jungle mansions to invisible retreats. Each episode will feature four spectacular and contrasting homes exploring their unique settings & architecture.

Explore a palatial cliff-top villa complete with indoor and outdoor pools. A remote cliff-top home deep in West Virginia and then uncover a retreat built into rocks on the rural outskirts of Stockholm.

Head to the Serra Da Mantiqueira Mountains, Brazil, to explore a 2000 square metre, grid-shaped family home hidden in nature, then visit a wartime bunker on the Isle of Wight in the UK that's been transformed into an ultra modern home.

A futuristic villa built on the edge of a lake in Austria. A cabin perched on the edge of a river. A unique beachside house built into the rock, and in rural England a modern mirrored house, designed to blend into and reflect its rural setting.

Venture into the Spanish countryside to explore an enchanting villa. A cliffside retreat that is ultra-modern. In rural Quebec, a cabin that resembles a pair of binoculars perched on a cliff, and finally a woodland retreat in Portugal.