In this exploratory and qualitative study, the researchers aimed to understand the teenagers’ experience in science museums in a visit out of the school context. In particular, we present the analysis of the visit of five groups, aged between 14 and 17 years, who study in public schools, to the exhibition “Past and Present - science, health and public life”, located in the Castelo Mourisco do Museu da Vida, from Fundação Oswaldo Cruz, in Rio de Janeiro.