The Hauptwache in Frankfurt’s city centre is a Baroque building dating from 1730 and initially served as a guardhouse. After its destruction during the Second World War, it was initially rebuilt in a simplified form. It was not until 1968 that it was restored true to the original and the underground station was added. The station and its square therefore bear the name Hauptwache. As part of a renovation, the building was generously reconstructed and the rooms on the ground floor were combined. An extension with a terrace was added to the north, where a café opened in December 1905. This has been preserved to this day.