There is one place named Haus Nienburg in Germany.
All places in the world called "Haus Nienburg".
Neustadt (15)
Neuhof (13)
Marienthal (13)
Burg (12)
Neudorf (12)
Buchholz (11)
Friedrichsthal (11)
Lindenberg (11)
Neuhaus (11)
Aue (10)
Schönberg (10)
Steinberg (10)
Bergen (10)
Holzhausen (10)
Glashütte (10)
Winkel (9)
Neukirchen (9)
Lichtenberg (9)
Blumenthal (9)
Steinfeld (9)
Altenhof (9)
Schönfeld (8)
Steinbach (8)
Rosenthal (8)
Limbach (8)
Altstadt (8)
Steinfurth (8)
Breitenbach (8)
Petersberg (8)
Linden (8)