"古城" (gǔ chéng) refers to ancient cities in China that showcase historical architecture and cultural heritage. These cities often feature well-preserved structures, traditional streets, and significant landmarks that reflect the history of the region. Many ancient cities, such as 丽江 and 平遥, attract tourists who wish to experience the rich cultural tapestry of China's past. Visitors to ancient cities can explore various attractions, including 古建筑 (ancient buildings), 博物馆 (museums), and local markets. These cities often host festivals and events that celebrate traditional customs, allowing tourists to engage with local culture. Overall, ancient cities serve as important sites for understanding China's history and heritage.