Hillesheim is the third largest town in the Vulkaneifel district in Rhineland-Palatinate, Germany. It was the seat of the former Verbandsgemeind…Hillesheim is the third largest town in the Vulkaneifel district in Rhineland-Palatinate, Germany. It was the seat of the former Verbandsgemeinde Hillesheim. The town lies almost in the middle, halfway between Cologne and Trier, and only 30 km from the Belgian border. Hillesheim lies in the Vulkaneifel, a part of the Eifel known for its volcanic history, geographical and geological features, and even ongoing activity today, including gases that sometimes well up from the earth.