Karlshamn's beautiful archipelago extends from the western municipal border to Sweden’s southeastern corner. This group of islands is called Hällaryd’s archipelago and consists of 270 scenic islands of different sizes with stone or rocky beaches and meadows. Joggesö, Ekö, Hallö, Östra Bokö and Fölsö are the names of some of the islands. The largest in the archipelago is Tärnö. The archipelago boats visit most islands, starting at the archipelago terminal in the city centre across from First Hotel. Boats also depart from Matvik and Järnavik.

The museum is located in Karlshamn's cultural quarter. Here you will find the city museum, the old punsch factory, the tobacco factory, the silversmith's workshop, the printing factory, the art gallery, and the famous songwriter for children Alice Tegner's special room. Skottbergska Gården is also in the cultural quarter. It is one of Sweden’s best-preserved trading houses with roots from the late 18th century, original adornments and an apartment furnished in the style of that period.

The seaside promenade is a lovely hiking trail along the coast in central Karlshamn. It is about 2 kilometres long and starts at the statue of the emigrants, Karl Oskar and Kristina, in Näsviken. The hiking trail goes all the way out to Vägga fishing harbour, where you'll find a smokehouse, fish restaurant, café, and campsite. Along the trail, there are several public barbecue spots and places with great views to enjoy. Along the way, you'll also pass by Cafe Villa Utsikten (only open in the summer, but a very nice viewpoint all year round), paddle courts, Väggabadet (swimming pools) and Karlshamn’s Kallbadhus (outdoor swimming bath).