The Sanxingdui Museum, 40 km north of Chengdu in Guanghan, houses one of the most spectacular Bronze Age collections in the world. The Sanxingdui civilization (approximately 1200-1000 BC) produced bronze work of a sophistication and strangeness that still puzzles archaeologists: giant anthropomorphic figures, stylised animal masks, and tree sculptures that have no parallel in any other ancient culture.
The museum has been substantially expanded since 2020's new excavations, and a visit takes a good half-day. Take a bus or shared minibus from Chengdu's Zhaojue Temple bus station. The site includes the excavation pits themselves, viewable through glass floors. This is one of China's essential archaeological experiences — more significant, and far less crowded, than most visitors expect.