You'll want to browse the collections at Bunker Museum, Kaliningrad Regional Museum of History and Arts, and B-413 Submarine Museum. Explore notable local landmarks like Ruins of Koenigsberg castle, Amber Museum, and King's Gate. You can watch performances at Kaliningrad Regional Musical Theatre, Kaliningrad Regional Youth Theater for Young Spectators, and Kaliningrad Regional Drama Theatre if you're interested in local theater.