The Alexander Nevsky Cathedral crowns the hill of Toompea. The history of Toompea is closely linked to the history of rulers and power in Estonia. The much-rebuilt Toompea Castle – consisting of the czarist era governor's palace, walls and towers of the medieval fortress, the expressionist parliament building dating from 1922, plus a few other buildings – now houses the Estonian Parliament. 

There is a Post office opposite the Cathedral and there is also a KGB Museum is in the Viru hotel, opposite the post office.