Question: What museum is now housed in the palace built by Nguyễn An and others in the 15th century?
Sentence (from "Nguyễn An"): Nguyễn An (Sino-Vietnamese 阮安; died 1453), known in Chinese as Ruan An (pinyin) or Juan An (Wade-Giles), was a Ming dynasty eunuch, architect, and hydraulics specialist between the first and fifth decades of the 15th century.
Relevant evidence: Yes