Ostrava Museum Night at Gong Gallery! Open from 5 PM to 10 PM, free entry. Free tour of exhibitions PIONEERS – Permanent exhibition showcasing the pioneers of op-art and kineticism. GODSPEED, FRIENDS – The theme of mining in the works of Vilém Wünsche, Ferdiš Duša, Vlastimil Rada, and Julie Bérová is enhanced by chronicles, notes, photographs from private collections, and other often long-hidden artifacts. KRIŠTOF KINTERA - NEUROPOLIS – The exhibition opens up themes of technological progress, consumerism, excessive waste production, and its impact on the environment. Creative workshop for young and old - The Secret of the Circle