Mykolaiv, also known as Nikolaev, is a city in southern Ukraine, administrative center of the Mykolaiv Oblast. Mykolaiv is arguably the main ship building center of Black Sea. Aside of its three shipyards within the city is located number of research centers specializing in shipbuilding such as the State Research and Design Shipbuilding Center, Zoria-Mashproekt, and others.The city is an important transportation junction of Ukraine.Mykolaiv's orderly layout reflects the fact that its development has been well planned from the founding of the city. Its main streets, including the three main East-West Avenues, are very wide and tree lined. A significant part of Mykolaiv's land area is beautiful parks. Park Peremohy is a large park on the peninsula just north of the city center of Mykolaiv, on the North side of the Inhul river.Mykolaiv has a population of about 500,000.