‘If you don’t share, were you really there?’ questions the behaviour of visitors in art museums through their use of mobile phone photography. The project draws a parallel between the physical absence of the tangible artwork and the transient life of a single image posted online. The photograph taken and shared disappears into an unprecedented flow of online images. Capturing and sharing a social media souvenir has become a priority for museum visitors, whose behaviour expresses their wish to see the most by spending the least amount of time in a specific space. This fast viewing experience generates an act of looking that prevents contemplation and is mostly encouraged by mass-consumptive, contemporary tourism that offers visits to countries, cultural institutions or sightseeing attractions the quickest way possible: with their mobile phones.