“Museums on a Summer Night” is the largest promotional campaign of Slovenian museums and galleries. It is organized by the Slovenian Museums Association. This year the coordination was taken over by the Posavski Museum Brežice and the Slovenian School Museum, OU Sports Museum. This year's 21st edition of “Museums on a Summer Night” will take place on June 17, 2023. More than 80 participating museums, galleries and other institutions will organize an interesting and varied program in more than 170 venues between 18:00 and 24:00
