This elegant mansion, built in 1919 by a Polish merchant and opened as a museum in 2002 after a 3-year restoration effort, was where China's top Communist leaders stayed during official inspections of Heilong Jiang. Sumptuously designed rooms on the first floor contain several mementos, including a bathrobe once used by Zhou Enlai. An impressive spiral staircase leads up to the room where Mao slept, still with the original bed.