The attractive coastal town of Kalmar, opposite the Baltic island of Öland, is dominated by the imposing Kalmar Slott. Built in the 12th century, it was rebuilt in the 16th century by the Vasa kings. It remains the best preserved Renaissance castle in Northern Europe today. The living quarters, chapel, and dungeon can be visited—it's definitely worth a stop on your way in or out of Öland.
Kungsg. 1, Kalmar, 392 33, Sweden