Located in the Ruinen forest in the Netherlands, there is such a mysterious flat-roofed holiday cottage, its name is Carousel, but it can not be physically turned, the whole house seems to have only doors without walls, and is divided into eight independent Spaces of different sizes. Different colors, brightness, materials and architectural lines are used to express the natural interaction between different Spaces and the forest. In fact, it can be said that the house has no door, and tenants can freely enter and exit from any side of the house, just like an open pavilion.