the ) proliferated without plan. Despite a building ban imposed in 1691, more than 600 houses existed in the area by 1700. At that time, the George Gate was a rectangular gatehouse with a tower. Next to the tower stood a remaining tower from the original medieval city walls. The upper floors of the gatehouse served as the city jail. A drawbridge spanned the moat and the gate was locked at nightfall by the garrison using heavy oak planks. A highway ran through the cattle market to the northeast towards . To the right stood the George chapel, an orphanage and a hospital that was donated by the Elector Sophie Dorothea in 1672. Next to the chapel stood a dilapidated medieval plague house which was demolished in 1716. Behind it was a rifleman's field and an inn, later named the . By the end of the 17th century, 600 to 700 families lived in this area. They included butchers, cattle herders, shepherds and dairy farmers. The George chapel was upgraded to the George church and received its own preacher. (1701–1805) After his coronation in on 6 May 1701 the Prussian King Frederick I entered Berlin through the George Gate. This led to the gate being renamed the King's Gate, and the surrounding area became known in official documents as (King's Gate Square). The suburb was renamed (or 'royal suburbs' short). In 1734, the Berlin Customs Wall, which initially consisted of a ring of palisade fences, was reinforced and grew to encompass the old city and its suburbs, including . This resulted in the King's Gate losing importance as an entry point for goods into the city. The gate was finally demolished in 1746. By the end of the 18th century, the basic structure of the royal suburbs of the had been developed. It consisted of irregular-shaped blocks of buildings running along the historic highways which once carried goods in various directions out of the gate. At this time, the area contained large factories (silk and wool), such as the (one of Berlin's first cloth factories, located in a former barn) and a workhouse established in 1758 for beggars and homeless people, where the inmates worked a man-powered treadmill to turn a mill. Soon, military facilities came to dominate the area, such as the 1799–1800 military parade grounds designed by David Gilly. At this time, the residents of the were mostly