On October 14th, the 9th annual Signal Festival will begin in Prague. A week prior to the spectacular event, visitors of Prague can already observe a number of interactive virtual installations. Thanks to a special app, beautiful works of art created by six different authors can be seen in the streets of Karlín since October 7th. Anyone can download the Signal Festival application on their smartphone for free on Apple Store or Google Play. The organizers designed the app especially for this occasion, with the hope that the guests would be able to experience art in augmented reality. It also contains a programme and a map of the entire festival which takes place from the 14th until the 17th of October, every day from 19:00 to 24:00. These days, interested visitors can discover art installations with their phones at Karlínské náměstí, Negrelli Viaduct, Kooperativa Headquarters, River City Karlín, Corso Court and Lyčkovo náměstí. The best time to visit is in broad daylight from 8:00 to 19:00, according to the recommendation from the organizers themselves. The new project was developed during the pandemic situation when the Signal Festival last year had to be canceled due to the covid restrictions. The organizers aimed to create a free open-air gallery of virtual art for all Prague visitors.