Burgruine Liemberg is a ruined castle in Carinthia, Austria, west of the town of the same name in the municipality of Liebenfels on the steep slope of the Göseberg. The complex, built in the 12th century, consists of a Romanesque Round tower of about nine meters in diameter, a well preserved Gothic keep and the great hall, which has been remodeled. Due to its small size, this rather unusual castle complex has been largely overlooked. The outwork built in rocky steps below the castle was adapted as a farm residence and was inhabited until the 20th century.