Hamburg Hauptbahnhof is long, wide, and high. It has rentable area and in total. The clock towers are , and the clocks have a diameter of . The track shed is constructed of iron and glass and spans the main line platforms and two S-Bahn tracks. The platforms are reached from two bridges at street level, one at each end of the track shed; from the northern bridge by stairs and by lifts, and from the southern bridge by escalators. Two other S-Bahn tracks and the subway tracks are in a connected tunnel system.