Sweden has countless castles (or 'slott' in Swedish) from its storied history. Seeing all of them would take ages. I have compiled a list of some of my favorite castles from across Sweden including Uppsala Castle, Kalmar Castle, Kärnan, Borgholms Castle, Gripsholm Castle, Vaxholm Fortress, Örebro Castle, Skokloster Castle, and Carlstens Fästning.