in King Fahd Park, close to Quba Mosque on an area of 8,200 square meters (88,264 square feet) In 2018, the MMDA launched Madinah Forum of Arabic Calligraphy, an annual forum to celebrate Arabic calligraphy and renowned Arabic calligraphers. The event includes discussions about Arabic Calligraphy, and a gallery to show the work of 50 Arabic calligraphers from 10 countries. The Dar al-Qalam Center for Arabic Calligraphy is located to the northwest of the Masjid an-Nabawi, just across the Hejaz Railway Museum. In April 2020, it was announced that the center was renamed the Prince Mohammed bin Salman Center for Arabic Calligraphy, and upgraded to an international hub for Arabic Calligraphers, in conjunction with the "Year of Arabic Calligraphy" event organized by the Ministry of Culture during the years 2020 and 2021. Other projects launched by the MMDA Cultural Wing include the Madinah Forum of Live Sculpture held at Quba Square, with 16 sculptors from 11 countries. The forum aimed to celebrate sculpture as it is an ancient art, and to attract young artists to this form of art. Economy Historically, Medina's economy was dependent on the sale of dates and other agricultural activities. As of 1920, 139 varieties of dates were being grown in the area, along with other vegetables. Religious tourism plays a major part in Medina's economy, being the second holiest city in Islam, and holding many historical Islamic locations, it attracts more than 7 million annual visitors who come to perform Hajj during the Hajj season, and Umrah throughout the year. Medina has two industrial areas, the larger one was established in 2003 with a total area of 10,000,000 m2, and managed by the Saudi Authority for Industrial Cities and Technology Zones (MODON). It is located 50 km from Prince Mohammed bin Abdulaziz International Airport, and 200 km from Yanbu Commercial Port, and has 236 factories, which produce petroleum products, building materials, food products, and many other products. The Knowledge Economic City (KEC) is a Saudi Arabian joint stock company founded in 2010. It focuses on real estate development and knowledge-based industries. The project is under development and is expected to highly increase the number of jobs in Medina by its completion. Human resources Education and scholarly activity Primary and secondary education The Ministry of Education is the governing body of education in the al-Madinah Province and it operates 724 and 773 public schools for boys