San Diego Chinese Historical Museum's Dr. Sun Yat-Sen Memorial Extension in downtown San Diego houses the museum's rotating exhibition program in a ground-level gallery at 328 J Street, one block from the permanent collection at 404 Third Avenue. The gallery interior, designed by architect Joseph Wong, doubles as a lecture hall where authors, artists, and scholars present to museum patrons, mirroring the public-lecture programming that ICA San Diego runs from Balboa Park. Bay-window vitrines visible from the sidewalk rotate thematic displays on old Chinatown, traditional Chinese medicine, and everyday life in China, anchored at the entrance by a statue of the First Emperor sculpted by Guo Xuanchang and Cheng Yunxian. A bilingual library of Chinese and English volumes supplements the exhibition program, and the on-site museum store generates acquisition funds for new ethnographic pieces, building holdings that parallel the photographic archives at Museum of Photographic Arts in Balboa Park. At least two special exhibitions per year cycle through the space, with the most ambitious productions pairing large-format oil-painting retrospectives with commissioned catalog essays.