| Summary: | From 1981 to 2009, Maria Lai created a series of site-specific outdoor artworks made of different materials (above all cement, then painted with acrylic colour) located in her hometown Ulassai (Sardinia), which became an open-air museum. This paper focuses on a project regarding each artwork, with the creation of a documentation record on their history and conservation issues. Over the years, retouching and repainting interventions were realized by the artist and local workers without any conservator-restorer being involved in the process. The paper also aims to provide a description of these interventions with a focus on three case-studies, exploring the challenges related to maintenance, particularly the ones involving retouching and repainting.
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