Complex sentence: It was badly damaged in World War II but was never fully repaired, and in 1956 the main station building was closed, passengers instead being directed to a new concourse level building at the platform entrance to buy tickets.
Split into simpler sentences: It was badly damaged in World War II but was never fully repaired. The main station building was closed in 1956, passengers instead being directed to a new concourse level building at the platform entrance to buy tickets.