You can have this (almost) to yourself. It is a great museum with permanent exhibitions of Portuguese engagement with the East (India, China, Japan, Timor l'Este or East Timor) as well as of Chinese Opera. Temporary exhibitions provide extra interest. There is a cafeteria in the basement and a restaurant on the 5th floor (with a great view of the Tejo river). The Museu do Oriente suffers from bad connections with public transport and the hop-on-hop-off sightseeing buses. Their loss is your gain if you want to get away from the noisy crowds and chill with ancient art. The museum shop is of astounding quality; you are sure to find presents to give. You come out refreshed!