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