Harimägi is one of the largest mesas in the Otepää Uplands (211 m above sea level). It is worth coming to Harimäe whenever you are near Otepää. The Harimäe observation tower is located 3 km from Kääriku in the direction of Sangaste. The height of the tower is 28 m, the highest viewing platform is 24 m high. The tower offers views of the Otepää mountains and across the Väike Emajõgi valley to the Karula upland. Camping is also allowed at the tower. Good to know: Harimägi is also called Leenard’s and Leonhard’s hill. From 1816 to 1819, geodetic surveys were carried out here by the internationally recognised astronomer and surveyor Friedrich Georg Wilhelm Struwe (1793–1864).