Gräfsnäs Slottspark is a popular tourist destination in Alingsås, Sweden, known for its castle ruins and beautiful park. Originally dating back to the 1100s as a royal estate, the castle was rebuilt several times before falling into ruin in the late 1800s. Acquired by the Västgöta-Göteborgs Järnväg (VGJ) in 1911 and later gifted to the Erska municipality, the park now offers recreational activities, events, and a museum railway operated by AGJ. With a range of activities like swimming, historical tours, and festive celebrations, Gräfsnäs Slottspark is a charming spot for visitors to enjoy.