The renaming of the Tegel U-Bahn station perhaps occurred to avoid confusion.
It has eight exits, and is an important station for people who want to go to the Tegeler See, a recreation site in Berlin.
Even though line U6 only opened in 1923, by the 1930s there were already plans by the city of Berlin to extend the U6 to Wedding and to Tegel.
Due to the imminent global economic crisis and the resulting financial consequences for the city of Berlin, the work stopped.
After the Second World War, the BVG planned a extensive expansion of the Berlin U-Bahn.