The East Zhejiang Maritime Affairs/Folk Custom Museum is a museum located in Yinzhou District in Ningbo, Zhejiang, China. It is located in the Qing'an Guildhall, a reconstructed complex which once housed a temple to the sea-goddess Mazu. Originally built in 1191, the complex was destroyed and rebuilt several times. After its mid-19th century restoration by Ningbo's guild of Fujianese merchants, it was acclaimed as one of the most beautiful temples in China and was used by the merchants as their guildhall. It was destroyed in 1949 as the Communists were fighting the Chinese Civil War, and suffered further harm during the Cultural Revolution, but was repaired from 1997–2001. It reopened in June 2001 as a museum dedicated to eastern Zhejiang's maritime history and local arts and crafts.