Pekanbaru is the capital of Riau province, Sumatra and is the centre of oil production in the province.
It has an area of 632. 26 km² with a population of 1,093,416. Located on the banks of the Siak River, which drains into the Strait of Malacca, Pekanbaru has direct access to the busy strait and was long known as a trading port. Pekanbaru was originally built as a market by Minangkabau merchants during the 18th century. A settlement has existed on the site since the 17th century. In the late 19th century, the city was developed to serve the coffee and coal industries, and the Dutch built roads to help ship goods to Singapore and Malacca. This city is served by the Sultan Syarif Kasim II International Airport and Sungai Duku Port that is located by the Siak River. The origin of Pekanbaru was inseparable from the existence of the Siak River as a distributing route for commodities from the Minangkabau Highlands to the Strait of Malacca.