The British Museum was established in 1753, largely based on the collections of the Irish physician and scientist Sir Hans Sloane. It first opened to the public in 1759, in Montagu House, on the site of the current building. The British Museum has one of the world's largest and most comprehensive collections of antiquities from the Classical world, with over 100,000 objects. These mostly range in date from the beginning of the Greek Bronze Age. The museum has the largest online database of objects in the collection of any museum in the world, with 2,000,000 individual object entries, 650,000 of them illustrated, online at the start of 2012.