10th century - Original edification (the first documented reference dates back to 994);
13th century - Construction of the Romanesque church;
17th and 18th centuries - Remodeling and transformation of the main chapel and the main façade; remodeling of the cloister and monastic quarters;
1883 to 1887 - Restoration works under the supervision of the Ministério das Obras Públicas [Ministry of Public Works];
1910 - Classification of the church as National Monument (Dec. 6-16-1910);
1920 and 1924 - Beginning of the restoration works under the Ministério das Obras Públicas [Ministry of Public Works];
1927 - A fire partially destroys the Monastery;
1927-1938 - Beginning of the restoration works of the DGEMN – Direção Geral dos Edifícios e Monumentos Nacionais [General Directorate for Buildings and National Monuments];
1950-1987 - Conservation and restoration works under the scope of the DGEMN – Direção Geral dos Edifícios e Monumentos Nacionais [General Directorate for Buildings and National Monuments] and of the Fabriqueira Commission;
1992 - The Church and Monastery of Paço de Sousa are allocated to the IPPAR - Instituto Português do Património Arquitetónico [Portuguese Institute of Architectural Heritage];
1998 - The Monastery of the Saviour of Paço de Sousa is included in the Route of the Romanesque of Vale do Sousa;
2010 - Opening of the Tourist Information Centre of the Route of the Romanesque;
2017-2018 - Conservation, safeguarding and enhancement works, under the coordination of the Route of the Romanesque: roof maintenance, drainage and earthworks in the surrounding area; cleaning and treatment of walls, conservation of ceilings, electrical installation and renovation of the cloister; archaeological excavations, conservation and restoration works in the sacristy.
