Beijing Road Pedestrian Street & Underground Ruins (北京路)

Beijing Road offers the strongest historical depth on this list, with 2,000 years of continuous commerce visible under glass. The site's glass-covered excavation reveals 11 distinct road layers from the Tang Dynasty to the Republic era, making it China's most accessible living archaeology display. Entry is free, and the street above brims with international fashion brands and street snacks. TripAdvisor rates it 4.4/5, calling it "a fascinating combination of ancient history and modern shopping."