Science centres and museums need to innovate to attract new audiences and compete with other places that draw children and adults. Evening/night events appear to be quite successful for our institutions, as well as turning up in unexpected places. Seven speakers from Serbia, the UK, Italy, Germany and Sweden will discuss events organised by their museum or science centre outside usual opening hours (adult-only parties on exhibition floor, sleep overs for children, and more). Speakers will offer advice for starting similar activities, reveal why they endeavored these activities, and weigh in on the difficulties and successes.