The whitewashed, neoclassical building on the east hand side of the square is The Holy House of Mercy, a charitable, church organisation since its inception in the 16th century. Despite its divine mission, the building itself hasn't always been a home of praying and piety and the house has served as a refuge for prostitutes and was actually where Macau's first lottery ticket was sold - for charity of course. Today it's home to a small museum commemorating the Society's charitable works in Macau, including the skull of its founder, Dorn Belchior Carneiro.

It was a medical clinic and several other social welfare structures in early Macau. It later served as an orphanage and refuge for widows of sailors lost at sea.

It is part of the UNESCO World Heritage Site "Historic Centre of Macau".

Traffic:Bus 10, 10A, 11, 21A, 2, 3, 3A, 4, 5, 7, 8A, 26A, 33, get off at the Xinma Road Station

Ticket:$5

Opening time:
10:00 - 13:00
14:00 - 17:30
Sunday and public holiday are closed.