Constantine (Arabic: قسنطينة Qusanṭīnah), also spelled Qacentina or Kasantina, is the capital of Constantine Province in northeastern Algeria. During Roman times it was called Cirta and was renamed "Constantina" in honor of emperor Constantine the Great. It was the capital of the French department of Constantine until 1962. Located somewhat inland, Constantine is about 80 kilometres (50 miles) from the Mediterranean coast, on the banks of the Rhumel River.

Constantine is regarded as the capital of eastern Algeria and the commercial center of its region, and it has a population of about 450,000 (938,475 with the agglomeration), making it the third largest city in the country after Algiers and Oran. There are several museums and historical sites located around the city. Constantine is often referred to as the "City of Bridges" due to the numerous picturesque bridges connecting the various hills, valleys, and ravines that the city is built on and around.

Geography:

Constantine is situated on a plateau at an elevation 640 metres (2,100 ft) above sea level. The city is framed by a deep ravine and has a dramatic appearance. The city is very picturesque with a number of bridges over Rhumel River and a viaduct crossing the ravine. The ravine is crossed by seven bridges, including Sidi M'Cid bridge. Constantine is the railhead of a prosperous and diverse agricultural area. It is also a centre of the grain trade and has flour mills, a tractor factory, and industries producing textiles, wool, linen and leather goods Algeria and Tunisia serve as its markets.