Contemporary Baltic states; where Oma and Opa grew up (green star)
Google map of Kaliningrad, showing where Oma and Opa grew up

Google maps showing both Oma and Opa’s birthplaces: http://tinyurl.com/ywsty42p. Examining it in satellite view shows remnants of towns and roads, but the area is now abandoned.

Oma grew up in the village Alt Heidlauken, which was renamed Wiepenheide between 1938-1945. The closest town was Lauken in the district of Labiau.

Historical map of Alt Heidlauken, Oma’s birthplace. The Baltic Sea (Nord See) is to the far left; the body of water to the immediate left is the Kurisches Haff.
Historical map of Alt Heidlauken, close up

Opa grew up in the town of Alt Sussemilken, renamed Karlsrode between 1938-1945.

Historical map of Alt Sussemilken, Opa’s birthplace. It is on the Timber river, a few kilometers from Alt Heidlauken where Oma grew up.

Another map of the time, showing how close Oma and Opa lived to one another.