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
City Gate (Valletta) Square. The new city gate, like the rest of Piano's project, was controversial. The majority of the Maltese welcomed the demolition of the fourth gate, although it was one of the few examples of Italian rationalist architecture on the island. Some critics of the new gate preferred a more traditional design similar to the third gate. The new gate has been compared to the ancient Egyptian Temple of Edfu, with critics saying that the breach in the bastions is out of place in the largely Mannerist and Baroque city. In October 2014, an art installation entitled "Prospettiva" was inaugurated in