For 10 points, name this concrete structure that divided the current capital of Germany.
Steel fortifications at this site were known as the "asparagus bed" or "Stalin's lawn." One man attempted to bypass this structure by swimming across the Spree Canal; after his death, newspapers accused him of homosexuality. One politician predicted that this structure would last another 50 or 100 years; that man was (*) Erich Honecker. Checkpoint Charlie was a crossing point through this site. At the Brandenburg Gate, Ronald Reagan urged Mikhail Gorbachev to tear down this structure. For 10 points, name this concrete structure that divided the current capital of Germany.
Steel fortifications at this site were known as the "asparagus bed" or "Stalin's lawn.
Berlin Wall