You'll want to browse the collections at B-413 Submarine Museum, Bunker Museum, and Kaliningrad Regional Museum of History and Arts. Ruins of Koenigsberg castle, Timber Bridge, and Brandenburg Gate are monuments to see when you're exploring the area around Park of Sculpture. You can watch performances at Kaliningrad Regional Philharmonic Hall, Art House Concert and Theater Complex, and Kaliningrad Regional Youth Theater for Young Spectators if you're interested in local theater.