Aegidientorplatz

The Aegidientorplatz, colloquially known as Aegi is a busy square in Hanover located above the U-bahn station of the same name. The square was named for the Aegidientor, one of the city gates of Medieval Hanover, which existed until 1780.

From the Middle Ages, the Aegidientor was the southeastern gate in the civic fortifications of Hanover. The name – occasionally also written as Egidien Thor – derived from the nearby Aegidienkirche. The road from Hildesheim entered the city through this gate. The settlement of Eddingerode stood before the door; established in the ninth century, it later fell into ruin.

Wikipedia