The Zwentendorf atomic power plant lies in the geographic region of the Tullner field on the souther end of the Danube. The property is at about 180m above sea level.
Zwentendorf on the Danube is a market community with about 3800 inhabitants in Lower Austria, and lies in the Tulln region.

Coordinates 48° 21' 16" N, 15° 53' 5" E