The fourth annual Signal festival of light art runs from Oct. 13 to 16 in Prague 1, 2 and 3. There will be some 23 installations and artworks by artists from 11 countries. Two-thirds of them will be world premieres. Last year the festival attracted 400,000 people, and since its beginning it has had more than 1 million. The festival has two main loops in the city center, plus installations at náměstí Míru, náměstí Jiřího z Poděbrad and Karlovo náměstí.
