Holy House of Mercy is a stone building beside the front area of Senado Square. It is a property managed by a charity organization in Macau of the same name "Holy House of Mercy". The basement of the building is the Notary Office of Macau government, while the second floor is the Holy House of Mercy Museum. Formerly, the building was called Zhiliang Temple. The outer walls of the building are white, creating a simple and serene atmosphere that fits in with the theme of charity.