If you thought you had outgrown your treehouse, guess again. Despite this modern house design brings a truly sophisticated, still boasts a traditional play elements that make a real tree house - a rope ladder, lots of outdoor deck, and of course, nature-inspired interiors. Designed by the architectural firm Baumraum, a company that specializes in the tree-dwelling, striking a tree house with curved roof and many windows. Those who appreciate modern architecture with an unconventional twist to plan the next trip to the North-West Germany, where you will find this contemporary tree house perched between alder and oak in Osnabruck.