You can make your way to Sweden’s 3rd largest city by train from anywhere in the country, even from Copenhagen airport in Denmark (by taking a train across the Øresund Bridge). You'll likely need a whole weekend here to see sights like the Turning Torso, Malmö Castle and Konsthall, the Malmö City Library, Lomma Beach, Gamla Väster, Möllevången, Steinstrand, and Lilla torg (among others!).