The Alte Oberpostdirektion is a grand late-historicist building on Stephansplatz, completed in 1887 as the headquarters of the Hamburg postal authority. Its ornate sandstone facade and imposing interior halls have made it a sought-after venue for large-scale events, trade fairs, and corporate galas. The building is a listed monument and one of the more striking examples of Wilhelmine-era architecture in the city centre.