Kassel is a city in central Germany, located in the state of Hesse. It is known for its rich history and cultural heritage, with roots dating back to the 10th century. The city is home to the famous Bergpark Wilhelmshöhe, a UNESCO World Heritage site, which features stunning gardens and the impressive Hercules monument. Kassel also hosts the documenta, a major contemporary art exhibition held every five years, attracting artists and visitors from around the world. The city has a diverse population and offers various educational institutions, including the University of Kassel, contributing to its vibrant atmosphere.