Tērvete hillfort (also known as Cukurkalns, “Sugar Hill”) is located in Tērvete village of the Tērvete municipality, on the right bank of the Tērvete river. Until the 13th century, the Semigallian rulers’ castle on this hill was the administrative centre of the Tērvete district. The mound and the ancient settlement are a state-protected archaeological monument.