In the northern part of the Diocletian Palace, within the wall over the Golden Gate an early Christian Church of St Martin found its place. The Church today is a replica of an early Christian Church from the 6th century, with a pre-Romanesque altar partition from the 11th century. This smallest and one of the oldest churches in Split is only 1.64m wide and 10m long, and is considered the most preserved sacral monument of Antiquity. Its location was originally used as a passageway for the guards guarding the northern entrance to the Diocletian Palace.