Ópusztaszer is a village in Csongrád county, in the Southern Great Plain region of southern Hungary. It is most known as the location of the Ópusztaszer National Heritage Park.
Wikipedia https://en.wikipedia.org/wiki/Ópusztaszer
Address (Unnamed Road), 6767, Hungary
Coordinates 46°29'8.167" N 20°5'49.058" E