The famous Signal festival celebrates its tenth anniversary this year and will again offer various light installations.
The unofficial start took place on Wednesday evening when the organizers projected the so-called video mapping onto the Basilica of St. Ludmila on Náměstí Míru.
At the same time, the wrecks of burnt-out cars imported from Ukraine were installed on Marian Square, which will also be part of the festival.
The program starts at 7 pm on Thursday and runs until midnight on Sunday.