You might want to spend some time browsing the exhibits at Kaliningrad Regional Museum of History and Arts, Amber Museum, or B-413 Submarine Museum. Sights like Ruins of Koenigsberg castle, Timber Bridge, and King's Gate are must-sees while exploring the area. You can check out the local talent at Kaliningrad Regional Drama Theatre, Kaliningrad Regional Philharmonic Hall, and Art House Concert and Theater Complex.