Ancient Chinese architecture has a long history dating back to the Shang Dynasty. It is mainly characterized by timber frameworks combined with stone carving and other techniques. Notable architectural achievements include the Great Wall, Forbidden City, and mausoleum of the First Qin Emperor. Traditional Chinese architecture features unique layouts like symmetrical courtyards and uses of wood and painted decorations rather than load-bearing walls. It includes imperial, residential, garden, and religious structures with regional variations across China.