In summer Borgholm town bustles with shoppers and boats fill the guest harbour. Borgholm became a seaside resort at the end of the nineteenth century and some of the older buildings still have their ornamented wooden verandas where gentlemen enjoyed their coffee and punsch at the beginning of the last century.

Dominating the town is Borgholms Slottsruin, a vast ruined medieval castle with an eventful past. There is a museum inside. Guides recount the history of the ruins and offer special tours for children in summer. Also in summer, the castle stage is a popular venue for concerts.

Just south of the centre lies Sollindens Slott, the summer residence of the Swedish royal family, completed in 1906. On 14 July each year, the birthday of Crown Princess Victoria is celebrated here with various events. Exhibitions are held in the pavilion and there is a palace gift shop.