There is one place named Unterbirken in Germany.
All places in the world called "Unterbirken".
Neustadt (15)
Marienthal (13)
Neuhof (13)
Neudorf (12)
Burg (12)
Friedrichsthal (11)
Lindenberg (11)
Neuhaus (11)
Buchholz (11)
Schönberg (10)
Aue (10)
Steinberg (10)
Bergen (10)
Holzhausen (10)
Glashütte (10)
Lichtenberg (9)
Steinfeld (9)
Blumenthal (9)
Altenhof (9)
Winkel (9)
Neukirchen (9)
Breitenbach (8)
Petersberg (8)
Linden (8)
Schönau (8)
Sonnenberg (8)
Hütten (8)
Stockhausen (8)
Karlshof (8)
Falkenberg (8)