Opening HoursA-Ma Temple (Barra Temple)7am - 6pm Lilau Square24/7Headquarters Building of the Marine and Water Bureau (Former Moorish Barracks)Verandah: 9am - 6pm Cathedral Square24/7Mandarin's House10:00 - 18:00 (No admission after 17:30) (closed on Wednesday) St. Joseph’s Seminary Church, forecourt and staircaseChurch: 10:00 - 17:00 (access from Rua do Seminário) Seminary: not open to the public St. Lawrence’s Church and forecourtMonday to Friday 07:00-18:00 Saturday and Sunday 07:00-21:00 St. Augustine’s Square24/7Dom Pedro V Theatre10:00-18:00 closed on Tuesdays Sir Robert Ho Tung Library BuildingMonday 14:00 - 20:00, Tuesday to Sunday 08:00 - 20:00 Camões Square24/7St. Augustine’s Church10:00 - 18:00 Headquarters Building of the Municipal Affairs Bureau (Former Leal Senado Building)Building 09:00 - 21:00 Gallery 09:00 - 21:00 (It will be opened only when there is an exhibition) Senado Square24/7Guia Fortress, Chapel of Our Lady of the Snows and LighthouseFortress: 09:00 - 18:00 (No admission after 17:30) Guia Chapel 10:00 - 17:00 Lighthouse: not open to the public Sam Kai Vui Kun (Kuan Tai Temple)09:00 - 18:00Headquarters Building of the Holy House of Mercy of MacaoMuseum: 10:00 - 13:00; 14:00 - 17:30 Closed on Tuesdays Cathedral07:30- 20:00 Lou Kau Mansion10:00 - 18:00 (No admission after 17:30) Closed on Mondays St. Dominic’s Church10:00 - 18:00 Ruins of St. Paul’s College (Former Mater Dei Church, forecourt and staircase)Façade of the Church of Mater Dei: 24/7 Sacred Art Museum and Crypt 09:00 - 18:00 (No admission after 17:30)Closed on Tuesdays after 14:00-18:00 Ruins of St Paul's 09:00 - 18:00 (No admission after 17:30) Na Tcha Temple (next to the Ruins of St. Paul’s College)08:00 - 17:00 Na Tcha Exhibition Room 10:00 - 18:00 (No admission after 17:30) Closed on Wednesdays Old City Walls (Section at Calçada de S. Francisco Xavier)24/7 Mount FortressFortress and gardens 07:00 - 19:00 Macao Museum 10:00 - 18:00 (No admission after 17:30) closed on Mondays St. Anthony’s Church and forecourt06:30 - 18:00 Barra Square24/7 Headquarters Building of the Orient Foundation (Former Casa Garden of the Camões Grotto)10:00 - 19:00 Closed on Monday. St. Dominic’s Square24/7Company of Jesus Square24H Protestant Cemetery08:30 - 17:30