Västervik's hospital, opened in 1912, was established due to the acute need for psychiatric care facilities. The hospital functioned as a self-contained community, housing approximately 1,400 patients and 900 staff at its peak. It was a closed world, now revealed at the Psychiatric Museum. The museum is housed in a former ward restored to its original condition. Visitors can take a guided tour to learn about the care practices during the hospital's operational days. The museum also features photographs from that era. In addition to the permanent exhibition, there are several smaller events organized each year.

Casimirsborg, a historic estate dating back to 1380, features parts of its original castle in the cellar vaults. The current building, from 1829, boasts period details like the grand salon, the largest private hall in Tjust and northern Småland, and a unique neo-Gothic chapel. It houses a cultural museum in the old granary, showcasing exhibitions on agricultural history, the Bronze Age, and painted floors. The estate also holds significant Bronze Age remains, indicating its past as a regional power centre. With untouched Bronze Age environments, Casimirsborg offers popular guided tours combining lectures with visits to ancient graves and rock carvings.

The Djerba Traditional Heritage Museum features beautiful collections of traditional costumes as well as Jewish and Muslim jewels. The museum is located in an old Koranic education centre from the 18th century.