Brandenburg Gate after the Thirty Years' War and a century before the gate was constructed, Berlin was a small walled city within a star fort with several named gates: Spandauer Tor, St. Georgen Tor, Stralower Tor, Cöpenicker Tor, Neues Tor, and Leipziger Tor "(see map)". Relative peace, a policy of religious tolerance, and status as capital of the Kingdom of Prussia facilitated the growth of the city. The Brandenburg Gate was not part of the old Berlin Fortress, but one of 18 gates within the Berlin Customs Wall (), erected in the 1730s, including the old fortified city and many of its
Brandenburg Gate (Kaliningrad) hundred years later the gate was torn down and replaced by a brick structure by order of King Frederick II of Prussia. During restoration work in 1843 the gate was significantly altered and decorated with sharp decorative pediments, cruciform sandstone color, stylized leaves on the tops, coats of arms and medallions. Sculptures of Field Marshal Hermann von Boyen (1771–1848), a war minister and reformer of the Prussian army, and Lieutenant-General Ernst von Aster (1778–1855), chief of the engineering corps, and one of the initiators of the second strengthening of the city walls, were added as well. The Brandenburg Gate is