The United States naval base at Pearl Harbor was surprised by a Japanese military strike on the morning of December 7, 1941: all eight U.S. Navy battleships were damaged, more than 2,000 Americans lost their lives, and this very attack led to the American involvement in World War II. Today, a memorial reminds of those who died in the assault, while two museums and outdoor exhibits present the historical happenings and their backgrounds. The visitor centre in general also features exhibits and interpretive programs for other Pacific National Parks: Kalaupapa National Historical Park on the island of Molokai, American Memorial Park in Saipan, and War in the Pacific National Historical Park in Guam.

Båtsmansgränd is a narrow alley located in Gamla Öster, the area above the harbour. Here, you'll find eight quaint, timber-framed boatmen's cottages, constructed in the 1740s. Their simple yet traditional design reflects the era's architectural style. Originally, they served as homes for the boatmen and their families, whom Västervik town was obliged to equip on behalf of the Crown. In the first half of the 20th century, the cottages housed members of the citizens' fire brigade. In the 1970s, these now heritage-listed cottages were converted into a hostel, available for rent in the summer.

Lan Su Chinese Garden, a tranquil oasis in downtown Portland, was built as a gift from Portland’s sister city, Suzhou, China. The garden features decorative rocks imported from China by the workers who helped construct it. Visitors can enjoy guided tours (included in the admission price), explore rare plants native to China, and relax in a traditional tea house. The garden also hosts a rotating array of cultural events and activities.