Blieskastel is a city in the Saarpfalz (Saar-Palatinate) district, in Saarland, Germany which is divided into villages. It is situated on the river Blies, approximately 10 kilometres southwest of Homburg (Saar), 8 km (5 mi) west of Zweibrücken, and 20 km (12 mi) east of Saarbrücken.

A sister city or a twin town relationship is a form of legal or social agreement between two geographically and politically distinct localities for the purpose of promoting cultural and commercial ties.