The southeast of Sweden has some really interesting areas. Kalmar is worth a day, good castle to explore, lovely town with a lively public square. Try the Frimurare hotel and ask for a superior room. Lovely. Right next to the train station too. A day in the glass country touring the glass factories is fun. The Kosta Boda glass blowing is good, but the place is dominated by the stores. We also had fun at the moose park. If you have Swedish roots, stop by the Emigrant museum in Ulvesta. Karlskrona on the sea coast has a wonderful maritime museum, good for several hours of your time, and the church in the city square is beautiful. Also check out the Admiral's Church, a huge wooden church by the Swedish Naval Academy. There are other towns like Kristianstad in the area too. Rent a car and go exploring. Safe travels.