This 3D model was originally created with Sketchup 8 and then converted to all other 3D formats. Native format is .skp 3dsmax scene is 3ds Max 2016 version, rendered with Vray 3.00 This was a tricky one. All doors are interactive. Use Tools>Interact to open and close them. Closet doors need 3 clicks to open fully. Start with the front door, or the garage door, both opens and closes. The front door leads to a tunnel which opens to the atrium. There is 3 Bedrooms, 2 Baths, Living, Dining, Kitchen, and Bonus Room, with a future bar area. The Master Bedroom has 2 portholes, the Bathrooms and Bedrooms have skylites, which are those blisters on the top in the bushes. Cupboard doors are not interactive. (You do not poke around in someone elses cupboards do you?) Update: the doors are dynamic components, as found in the dynamic components library. Side note: from the How did I do that? file: The Atrium stays in one spot when you spin the model in 3D mode! Super cool!