Edinburgh is Scotland's compact, hilly capital. It has a medieval Old Town and elegant Georgian New Town with gardens and neoclassical buildings. Looming over the city is Edinburgh Castle, home to Scotland’s crown jewels and the Stone of Destiny, used in the coronation of Scottish rulers. Arthur’s Seat is an imposing peak in Holyrood Park with sweeping views, and Calton Hill is topped with monuments and memorial. Edinburgh is Scotland's second most populous city and the seventh most populous in the United Kingdom. The official population estimates are 488,050 (2016) for the Locality of Edinburgh (Edinburgh pre 1975 regionalisation plus Currie and Baler no) 518,500 (2018) for the City of Edinburgh, and 1,339,380 (2014) for the city region, Edinburgh lies at the heart of the Edinburgh and South East Scotland city region comprising East Lothian, Edinburgh, Fife, Midlothian, Scottish Borders and West Lothian. The city is the annual venue of the General Assembly of the Church of Scotland. It is home to national institutions such as the National Museum of Scotland, the National Library of Scotland and the Scottish National Gallery. The University of Edinburgh, founded in 1582 and now one of four in the city, is placed 20th in the QS World University Rankings for 2020. The city is also famous for the Edinburgh International Festival and the Fringe, the latter being the world's largest annual international arts festival. Historic sites in Edinburgh include Edinburgh Castle, the Palace of Holyrood house, the churches of St. Giles, Greyfriars and the Canongate, and the extensive Georgian New Town built in the 18th/19th centuries. Edinburgh's Old Town and New Town together are listed as a UNESCO World Heritage site,] which has been managed by Edinburgh World Heritage since 1999.