SketchUp is a 3D modeling CAD program for making architectural, civil, interior design, mechanical design, and landscape architecture drawings. It shortens the 3D modeling time since designers can save time by downloading 3D models from the warehouse instead of having to take time to draw the 3D models from scratch. SketchUp 3D Warehouse is an open library of 3D models where SketchUp users can download or Upload 3D models.