The Upper Harz National Park was established as part of GDR's national park programme on 1 October 1990, two days before the reunification of Germany, on the basis of a ministerial decision by the East German government.
Ülem-Harzi rahvuspark loodi SDV rahvuspargi programmi osana 1. oktoobril 1990, kaks päeva enne Saksamaa taasühinemist, ministeeriumi otsusega Ida-Saksamaa valitsuse poolt.