Halloween Celebrations at Karlín Square. Come and enjoy a day full of Halloween fun, entertainment, and family-friendly activities on Sunday, November 1. Karlín Market, in cooperation with Karlínské Spektrum, is preparing a varied program for children and adults alike. Look forward to a fairy tale performance, live music, creative workshops, face painting, and sweet treats for everyone who arrives in costume. The day will culminate in a traditional lantern parade accompanied by the Lovesong Orchestra, followed by a spectacular fire show. Don't miss this delightfully spooky afternoon!