stylistic:tone
Urmia is the largest city in West Azerbaijan Province of Iran. In the Central District of Urmia County, it is capital of the province, the county, and the district. The city lies at an altitude of 1,330 metres (4,360 ft) above sea level along the Shahar River on the Urmia Plain. Lake Urmia, one of the world's largest salt lakes, lies to the east of the city, and the border with Turkey lies to the west. The city is the trading center for a fertile agricultural region where fruits and tobacco are grown. Even though the majority of the residents of Urmia are Muslims, the Christian history of Urmia is well preserved and is especially evident in the city's many churches and cathedrals. An important town by the 9th century, the city has had a diverse population which has at times included Muslims, Christians, Jews, Baháʼís and Sufis. Around 1900 Christians made up more than 40% of the city's population; however, in the next decades most of the Christians were either killed by the advancing Ottoman troops or in raids by Kurdish tribes or fled shortly after the end of the war. Urmia, Takab and Piranshahr respectively have the highest number of registered provincial sites in the list of national sites.