
Helme Order Castle Ruins, constructed in the first half of the 14th century, represent a significant medieval military stronghold in South Estonia. The fortress's distinctive oval ground plan measured approximately 120 by 60 meters and was surrounded by dual moats, with portions of its walls and characteristic window openings remaining visible today. Governed successively by German, Russian, Lithuanian, and Swedish powers, the castle was ultimately destroyed by Swedish forces in 1658 during the Russo-Swedish War. Local tradition speaks of a young maiden entombed within its walls to strengthen the structure—a legend reflecting the mystique of medieval fortifications. Located on a steep slope near the historic Pärnu-Valga road, the ruins are freely accessible year-round, and the nearby Doctor's Spring in the valley below adds to the site's cultural significance in regional folklore.