Rising up from a thickly wooded peak and often enshrouded in swirling mist, Palácio Nacional da Pena (Portugal) is a wacky confection of onion domes, Moorish keyhole gates, writhing stone snakes and crenellated towers in pinks and lemons.
Not a tree house, but a very cool and old house in the trees. An old settlement in the Scottish Highlands. <---- This place looks magical! Like the home of the three witches in The Black Cauldron or a house in the Shire!
Hole in the Wall - Port Alberni, British Columbia; Remnants of an old pipeline that once fed Port Alberni with water. The hole is where the pipeline was punched through the rock formation and joined up to the reservoir behind; photo via karen