The common area, a long open alleyway on the ground floor, serves as a gathering place, dining room, and playground for the children. This is where family members interact, communicate, and build relationships, all while exposed to the changing seasons through the net ceiling, which is open to the sky.  Photo 4 of 10 in 10 Thoughtful Ways to Incorporate Trees Into Homes from A Narrow Courtyard Joins a Unique Two-Family Home in Saigon