The most famous monument in Odivelas is the women's Convent of Saint Denis of Odivelas, founded by King Dinis I around 1295. Many famous religious women lived in the convent, which was frequently visited by Kings and Queens (indeed, several Kings had illegitimate sons with the nuns). The Gothic convent was very much damaged in the 1755 Lisbon earthquake, but the apse has survived, as well as the tomb of King Dinis and his daughter, "Princess Maria Afonso". The Convent also has interesting architecture in Manueline and Baroque styles.