sentences:  At that time a castle (which still survives today) was built on a hill.In the second half of the 13th century, the Piast dukes of Opole invited German settlers to colonize the Silesian Foothills.As the dukes then also ruled over the Lesser Polish lands east of the Biała River, settlements arose on both banks like "Bielitz" (now Stare Bielsko), "Nickelsdorf" (Mikuszowice Śląskie), "Kamitz" (Kamienica), "Batzdorf" (Komorowice Śląskie) and "Kurzwald" in the west as well as "Kunzendorf" (Lipnik), "Alzen" (Hałcnów) and "Wilmesau" (Wilamowice) in the east.