Karlskrona is included in the World Heritage list. It is the best preserved and most complete naval city that remains from the 16th and 17th centuries. It is an incredible experience, seeing som much history in everything from the battalions and fortifications to the bridges and churches. There is the Rope Walk of Lindholmen, Trossö, Drottningskär Citadel and Kungsholmens Fortress. Take a guided tour. The Visitor's Centre in the summer is the Church of the Holy Trinity at Stortorget.