Situated in the southern part of Karlshamn's town centre, the Maritime Museum unfolds its treasures within the walls of an ancient tobacco warehouse dating back to 1875. Within this historic setting, visitors can marvel at artefacts like an old ship fortlet from the mid-1800s, offering a glimpse into maritime history. The museum serves as a captivating portal to the rich maritime heritage of Blekinge, providing insights into the centuries-old history of shipping in the region.

Kastellet, a fortress island situated just off the port entrance of Karlshamn, stands as a testament to historical conflicts during the 17th-century feuds with the Danish. Beyond its historical significance, Kastellet provides the picturesque backdrop for a beloved local theatre performance held during the summer months. Accessible by boat from the inner harbour in Karlshamn during the summer season, Kastellet invites exploration and appreciation of its rich history and scenic allure.

Located in the cultural quarter of Karlshamn, Skottsbergska Gården, an 18th-century merchant's house, stands as a distinguished testament to Sweden's architectural heritage. This well-preserved edifice is among the country's most prominent monumental buildings, a rarity that sets it apart in the realm of burghers' houses. Maintained in its initial condition, Skottsbergska Gården is a unique treasure not only in Sweden but across Scandinavia. With historical significance and architectural grandeur, the old merchant's house offers visitors a glimpse into a bygone era, making it a noteworthy stop for those seeking a journey through Sweden's cultural and architectural history.