The Worship Hall was a venue for ritual activities when weather conditions were bad during the God-worshipping events in the Ming and Qing dynasties. When weather conditions were good for the event, it would be used to set up the imperial canopy serving as the lounge for the emperor. The Worship Hall was renamed Zhongshan Hall in memory of Sun Zhongshan (i.e., Sun Yat-sen) in 1928, and the themed exhibition is hosted in the hall.

The Worship Hall sits on a brick-and-stone pedestal north of the inner low walls. It is five bays wide and three bays deep, covered with a single-eave, gable-and-hip roof of yellow glazed tiles.