A huge open-air disco ball is the trademark of the annual Feldfunk Festival on Siegen's Fischbacherberg. Since 2017, the grounds on the ‘Schön & Gut’ field of experience have been enveloped in colourful light shows on a Saturday evening in summer. Live music and a great atmosphere make the place, where disadvantaged young people from Siegen are supported as part of a social, craft, artistic and nature-related project, the radiant centre of the Fischbacherberg.