Diversity, professional functionality, and a warm soul: The congress center with creative potential A surprising and well-thought-out interior design, along with state-of-the-art technology, combines with the experienced organization team at Eurogress Aachen to create a variable functional wonder with charm. The Brussels Hall, with its gently sloping, warm-toned wooden floor and cooler, curved mosaic walls, radiates serenity and focus on the essentials.