Madinat al-Hareer (Arabic: مدينة الحرير‎, meaning "Silk City"), is a proposed 250 km² (62,000-acre) planned urban area in Subiya, northern Kuwait. Upon construction, it would include the Burj Mubarak al-Kabir, a nature reservation of 2 square kilometres, a duty-free area which will be beside a new airport, in addition to a large business center, conference areas, environmental areas, athletic areas, and areas that concentrate on media, health, education, and industry. The City of Silk will also include numerous tourist attractions, hotels, spas, and public gardens. The city will be built in individual phases with total completion within twenty-five years. The development will cost an estimated 25 billion Kuwaiti Dinars (94 billion USD).