Empress Market in Saddar is the central shopping area of Karachi. Karachi's central bus station is also located in Saddar, thus connecting it with other areas of Karachi. A major street in Saddar is named Zaibunnisa Street, after the influential authoress and journalist, Zaib-un-Nissa Hamidullah. This street is one of the most modern and bustling in Karachi. Saddar is the hub of business activities in Karachi and is one of the oldest parts of the city. Many beautiful examples of British Colonial architecture can be found here; like the main building of Karachi Grammar School, Frere Hall and the Sindh Club. This was the centre of Karachi in the colonial era, and still is today.