Narva is the third largest city in Estonia. It is located at the eastern extreme point of Estonia, by the Russian border, on the Narva River which drains Lake Peipus. The capital of Ida-Viru County, Jõhvi, lies 50 km (31 mi) to the west. The Estonian part of the Narva Reservoir lies mostly within the territory of Narva, to the southwest of city center. The mouth of the Narva River to the Gulf of Finland is about 13 km (8 mi) downstream from the city.
After 1991 there have also been some disputes about the Estonian-Russian border in the Narva area, as the new constitution of Estonia (adopted in 1992) recognizes the 1920 Treaty of Tartu border to be currently legal. The Russian Federation, however, considers Estonia to be a successor of the Estonian SSR and recognizes the 1945 border between two former national republics. Officially, Estonia has no territorial claims in the area, which is also reflected in the new Estonian-Russian border treaty. Although the treaty was signed in 2005 by the foreign ministers of Estonia and Russia, due to continuing political tensions it has not been ratified.
Narva is dominated by the 15th-century Hermann Castle, with the 51-metre-high Long Hermann tower as its most prominent landmark. The sprawling complex of the Kreenholm Manufacture, located in the proximity of scenic waterfalls, is one of the largest textile mills of 19th-century Northern Europe. Other notable buildings include Swedish mansions of the 17th century, a Baroque town hall (1668–71), and remains of Erik Dahlberg‘s fortifications.
Across the Narva River is the Russian Ivangorod fortress, founded by Grand Prince Ivan III of Muscovy in 1492 and known in Western sources as Counter-Narva. During the Soviet times Narva and Ivangorod were twin cities, despite belonging to different republics. Before World War II, Ivangorod (Estonian: Jaanilinn) was administrated as part of Narva.