Hellersdorf is a Berlin U-Bahn

Berlin U-Bahn

The Berlin is a rapid transit railway in Berlin, the capital city of Germany, and is a major part of the public transport system of that city. Opened in 1902, the serves 173 stations spread across ten lines, with a total track length of , about 80% of which is underground...

 station located on the .

The station opened in July 1989, just a few months before the fall of the Berlin Wall

Berlin Wall

The Berlin Wall was a barrier constructed by the German Democratic Republic starting on 13 August 1961, that completely cut off West Berlin from surrounding East Germany and from East Berlin...

. The eastern extension of (what is now) line U5 was one of the last major construction projects of the former German Democratic Republic

German Democratic Republic

The German Democratic Republic , informally called East Germany by West Germany and other countries, was a socialist state established in 1949 in the Soviet zone of occupied Germany, including East Berlin of the Allied-occupied capital city...

.
Planned was the name "Kastanienalle" however it was changed to the actual name before opening.