Tranekær Castle on Langeland is a must. Take a detour of a mere 10km, and you will soon see the large red castle as you enter Tranekær. In the 1200s this was already a vast castle, situated on a steep hill with a moat around it. In 1659 the castle was given in dowry to Frederik Ahlefeldt-Laurvig and has been in the family ever since. In 1993 the estate entrusted the park to the Tranekær International Centre for Art and Nature (TICKON) to create land art of natural materials by world-renowned artists.