The objective of this paper is to present the project of inventory and study of the tile heritage integrated in the Centro Hospitalar de Lisboa Central, developed by Az – Azulejo Research Network (Rede de Investigação em Azulejo – ARTIS-IHA/FLUL). The results of this systematic inventory are available on Az Infinitum – Azulejo Indexation and Referencing System, a privileged research and cross-checking instrument, which provides a closer relationship between heritage, scientific knowledge and the community.