East Berlin had a wall that ran around its entire perimeter, even on the east side, to Keep East Germans OUT. It was a showplace for them, in “The Worker’s Paradise”.
The wall around West Berlin was 110 miles long. We had 5 days to run every mile of it.
The wall around West Berlin was give or take 96 miles. It was built by the DDR to keep it’s citizens from escaping to the west. West Berlin was 110 miles from the West German border at Helmstedt and thus 110 miles behind the Iron Curtain.
PS I have a couple of bricks from the wall...when it was still up!