Location situated in garderen bilderberg rsidence groot heideborgh is in a national park and regional attractions include apenheul kroller muller museum and dolphinarium harderwijk additional regional attractions include paleis het loo and theater congres orpheus hotel features bilderberg rsidence groot heideborgh has a full service spa an outdoor tennis court and an indoor pool complimentary wireless and wired high speed internet access is available in public areas and a computer