Australian architecture firm Nixon Tulloch Fortey built a tiny children’s playhouse as their entry into Melbourne’s annual Cubby House Challenge. The wooden Cubby House was created as a classic gabled-roof structure, but its vibrant lime green accents give the little home its modern and playful edge. The walls of the tiny pop-up building swing open and up to extend play space to the outdoors. The Cubby House is located at the Melbourne International Flower and Garden Show and will be auctioned off after the exhibition.