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.

Coastal Interpretive Center is a museum that celebrates Ocean Shore's history and wildlife. It features exhibits involving Native American artifacts, artifacts of Ocean Shore's founding, the wildlife in Ocean Shores, and an exhibit of debris that washed up on the shores from the Japanese tsunami.

The Emigrants Monument, an evocative representation of Karl-Oskar and Kristina from William Moberg's novel 'The Emigrants', graces the beach promenade in Karlshamn's Hamnparken. Crafted by the skilled hands of Axel Olson, this life-size bronze statue was unveiled in 1959. Serving as a poignant memorial, it honours the over 1 million Swedes who, between 1848 and 1930, left their homeland in pursuit of a better life, escaping the clutches of hunger and poverty. Many embarked on their journey to the United States from the very port of Karlshamn. Olson's masterpiece captures the essence of this historical exodus, portraying Karl Oskar and Kristina gazing out over the sea, symbolizing the hopeful embarkation of countless emigrants on their transformative adventure.