Träskö-Storö is part of the Hjälmö-Lådna Nature Reserve. It has a protected cove that is a popular natural harbour for pleasure boats.
Smooth, flat rocks make it easy to moor a boat in the protected natural harbour. Once on land, you may be met by grazing sheep from the farm Västergården on Hjälmö, why not take a sauna or walk along the nature trail. The Archipelago Foundation has owned large parts of the island since 1963. The cottage near the sauna, “Augustssonskans torp”, is named after the woman who lived here up until the 1970s. The south side of Träskö-Storö is privately owned.
The island has a rich fauna, being home to badgers, foxes, hares, deer and sometimes even moose. If you are lucky, you may see both white-tailed sea eagles and osprey. Fishing in the cove is prohibited from 1 April until 15 June in order to aid the growth of pike and perch.
Right next to Träskö-Storö is Stora Kalholmen, where a red building, built in 1914, became the first hostel in the archipelago.