Modern Tbilisi is an attractive city: the Mtkvari, bordered on the right bank by a boulevard, lies partly in a steep gorge and is made broader by the Ortachalskaya hydroelectric plant in the city. Beside the river, the old town, with narrow, winding streets, is dominated by the ruins of the old fortress and the huge, symbolic figure of Georgia on a ridge above it. In the old town are the Sioni Cathedral, dating from the 5th century and often reconstructed, the Metekhi Palace of the Georgian kings, and the 6th-century Anchikhati Church. Newer parts of the city lie beneath Mount Mtatsminda, accessible by a funicular rail line. North of the city is a large reservoir fed by irrigation canals.