Visiting a glass school in Borholm (and the relations established with them) took me three times to Denmark, and one to Sweden.
The first trip included the visiting the region of glass manufacturing in Sweden, so, upon arrival in Copenhagen, we rented a car to cross the odd tunnel-bridge to Sweden and drive to Ystad, from where a ferry took us to the island of Borholm.
Returning to the continent, we drove to Vaxjo, from where we started a couple of day trips around, visiting Kosta, Orrefors, and Kalmar.
The trip back to Copenhagen was made passing by Halmstad, Lund and Malmo, and the free hours in Denmark allowed the visit of Kronborg castle.
In the following visits to Bornholm I always used the plane from Copenhagen, renting a car in Ronne, thus becoming easy the visit to the small island, from where I remember Kirkeby, Arsdale, Alinge, Balka, Gudhjem, Hasle, Nexo, Nylars, Osterlars, Sandvig, Svaneke and Vestermarie. By coincidence, all visits were in autumn - it would be interesting to see it in another season.