In the capital city Prague in Czechia, The Signal Festival has started yesterday in Karlin Square, where the stunning video mapping took place on the facade of Church of St. Cyril and Methodius. The festival will be held in a total of 21 places, on the exteriors of historical buildings and monuments, and in some indoor environments. The festival consists of works designed by Czech and international artists, who are well-known in the field of light design, visual and digital arts, artificial intelligence, as well as conceptual art. The festival will welcome visitors until October 18.