Former border area

The nearly 1,400-kilometer-long inner-German border (also known as the German-German border) prevented residents of the German Democratic Republic from visiting the Federal Republic of Germany or permanently leaving for the West until 1989 through massive fortifications.[1] This did not include the part of the GDR's border with Berlin, whose western sectors within Berlin were sealed off by the Berlin Wall from 1961 onwards. The course of the demarcation lines between the western occupation zones and the Soviet Occupation Zone (SBZ) was established by the main victorious powers of World War II in several conferences and continued in this geographical form after the founding of the two German states in 1949. The border began in the south at the border triangle of Bavaria, Saxony / GDR, and Czechoslovakia and ended at the Baltic Sea in the Bay of Lübeck on the Priwall Peninsula.Source: de.m.wikipedia.org/wiki/Innerdeutsche_Grenze

On the way from Irmelshausen to Milz you drive over the former border. You can see two former border towers close together.