The Brandenburg Gate is a neoclassical-style sandstone building modeled on the gates of the Acropolis. It is supported by 12 pillars, with 6 on each side of the east and west, and the front and rear columns are walls. The gate building is separated into 5 gates. The passage in the middle is slightly wider. It is designed for royal members. Earlier, only the royal family and guests invited by the royal family can pass.