You might want to spend some time browsing the exhibits at Kaliningrad Regional Museum of History and Arts, B-413 Submarine Museum, or Museum of the World Ocean. Sights like Ruins of Koenigsberg castle, Timber Bridge, and Honey Bridge are must-sees while exploring the area. You can check out the local talent at Kaliningrad Regional Drama Theatre, Kaliningrad Regional Musical Theatre, and Kaliningrad Regional Youth Theater for Young Spectators.