Open to the public since 1993, Casa da Cerca-Contemporary Art Center, a cultural institution supervised by the Municipality of Almada and housed in an old eighteenth century leisure estate, was a personal project of painter Rogério Ribeiro. The initial program of researching and dissemination of the history and practice of Drawing and of its contemporary use, remains to this day. Loved by some, criticized by others, and permanently debated within the institution, this function is constantly updated by a team that, while cherishing the initial idea, has focused on involving visitors, creating a privileged relationship that sees rising loyal and diverse audiences. This article provides the testimony of a biographical and participatory project — which has hitherto received the scant attention of two dissertations on museology and tourism — and to evoke some of the various strategies used by Casa da Cerca to relate to its entourage and audiences, through its programming, on the 20th anniversary of its cultural activity.