A house in the middle of the Drina River in Serbia that was built by students 45 years ago still stands strong for swimmers to visit
Casa do Penedo or 'house of stone', in northern Portugal's Fafe mountains
Casa do Penedo, or House of Stone, is a bizarre dwelling in northern Portugal's Fafe Mountains
The only house on Elidaey island in Iceland
Just one cabin sits on Elidaey island in Iceland, which used to be inhabited by five families 300 years ago
The Errante guest house in Ritoque, Chile
The Errante guest house is situated in the 'Open City' near Ritoque, Chile, as part of a larger architectural experiment
The Mirror Cube at the tree house hotel, Harads, Sweden
The mirror cube room at the tree house hotel in Haras, Sweden, is the star attraction A look at the story behind Sweden's serene luxury TreehotelLoaded: 0%Progress: 0%0:00PlayMuteCurrent Time0:00/Duration Time2:55FullscreenNeed Textmore videos123Watch video
The HemLoft on Whistler mountain, Canada
HemLoft is an egg-shaped one-room house that was built illegally on Whistler mountain in Canada
Eagle's nest lodge, at the foot of the Aus mountains, Namibia
Eagle's Nest Lodge is a collection of rock houses built at the foot of the Aus Mountains in the Klein Aus Vista Nature Reserve, Namibia