Built to house Macau's municipal government, the Leal Senado has a neo-classical design and much of the original layout and structure has been retained through the years. The first floor has a ceremonial meeting room that adjoins an elaborate library. The name "Loyal Senate" is derived from the name bestowed upon Macau - "City of Our Name of God Macau, There is None More Loyal" - by King Dom João IV in 1654 because the colony's senate refused to recognise Spain's occupation of Portugal in the early 1600s.

The Leal Senado Building was the seat of Portuguese Macau's government (Legislative Assembly of Macau and Municipal Council of Macau). It is located at one end of the Senado Square in São Lourenço, Macau, China. It currently houses Macau's Municipal Affairs Bureau.