For the third time, we will light up the longest night of the year together! Umění pro město, GHMP, and Signal Festival are joining forces once again to bring you an unforgettable experience in celebration of Saint Lucy’s Day! Come enjoy the installations at Troja Chateau, which will transform the winter night into a magical spectacle full of light and color. The event will take place on December 12 and 13, and admission is free.