approximately round, inside which is found the Kaduna Polo Club. Kaduna Golf Club is also located within the Kaduna CBD. Other sports facilities include the Ahmadu Bello Stadium and Ranchers Bees Stadium. There are several hotels in the city. Infrastructure The infrastructure network in the city are currently being developed under the administration of Nasir el-Rufai. Kaduna has an inland dry port. The Nigerian military has several installations in the city including the Nigerian Defence Academy. Airport The city is served by Kaduna International Airport. The airport commenced operations in 1982. The Nigerian Air Force maintains a presence in the city. Railways Kaduna is also on the route of the planned Lagos–Kano Standard Gauge Railway, which has been completed between the national capital of Abuja and Kaduna. Trains for Abuja depart from the Rigasa Railway Station in Kaduna. Kaduna is an important junction on Nigeria's Cape gauge railway network. At Kaduna, a branch line connects the Lagos–Nguru Railway to the Port Harcourt–Maiduguri railway. Education Kaduna is popularly known as the centre of learning, as evident from the numerous educational institutions located in the state. Tertiary Institutions in Kaduna city include: Kaduna State University Nigerian Defence Academy (NDA), Kaduna Greenfield University Kaduna National Open University of Nigeria, Kaduna Study Center Air Force Institute of Technology, Kaduna National Teachers Institute (NTI), Kaduna School of Midwifery Kaduna Kaduna Polytechnic (1968), Kaduna National board for Islamic and Arabic studies Kaduna Business School Dialogue Institute Kaduna Institute of Ophthalmology, National Eye Centre, Kaduna. National board for Arabic and Islamic studies National center for nomadic education Ahmadu Bello University, Zaria, Kaduna State Places of worship Among the places of worship, there are churches and mosques. Sultan Bello Mosque is the biggest and a central mosque in Kaduna. There are also churches: Church of Nigeria (Anglican Communion), Presbyterian Church of Nigeria (World Communion of Reformed Churches), Nigerian Baptist Convention (Baptist World Alliance), Living Faith Church Worldwide, Redeemed Christian Church of God, Assemblies of God, Roman Catholic Archdiocese of Kaduna (Catholic Church), Mountain of fire and miracles ministries, North central 2 Mega Regional HQ (http://www.mountainoffire.org), Universal Reformed Christian Church, Kaduna (Protestant Church). Climate Notable people Umar Farouk Abdulmutallab, the "underwear bomber" suspect of the terrorist arson attempt on Northwest flight 253 in December 2009, grew up here and returned to the city on holiday. Tijani Babangida, footballer who played winger with Ajax Celestine Babayaro, footballer who played mainly