and Ye Olde Salutation Inn (the Salutation) in Maid Marian Way have both disputed this claim. The Trip's current timber building probably dates back to the 17th or 18th century, but the caves are certainly older and may have been used to store beer and water for the castle during medieval times. There are also caves beneath the Salutation that date back to the medieval period, although they are no longer used as beer cellars. The Bell Inn is probably the oldest of the three pub buildings still standing, according to dendrochronology, and has medieval cellars that are still used to store beer. Education Almost 62,000 students attend the city's three universities, Nottingham Trent University, the University of Law and the University of Nottingham; in the 2016/17 academic year, Trent University was attended by 29,370 students and Nottingham University by 32,515. The University of Nottingham Medical School is part of the Queen's Medical Centre. There are three colleges of further education located in Nottingham: Bilborough College is solely a sixth form college; Nottingham College was formed in 2017, by the amalgamation of Central College Nottingham and New College Nottingham (which had both previously formed from the merger of smaller FE colleges); and the Confetti Institute of Creative Technologies, owned by Nottingham Trent University, is a further education college that specialises in media. The city has dozens of sixth form colleges and academies, providing education and training for adults aged over sixteen. Nottingham also has a number of independent schools. The city's oldest educational establishment is Nottingham High School, which was founded in 1513. Museums The city contains several notable museums including: National Justice Museum – Museum of Law, Crime and Punishment through the ages, based at the Shire Hall in the Lace Market. City of Caves – A visitor attraction consisting of a network of man-made caves, carved out of sandstone, beneath the Broadmarsh. Green's Windmill and Science Centre – A unique working windmill in the heart of the city that was home to the 19th-century mathematical physicist and miller George Green. Nottingham Castle Museum – Home to the city's fine and decorative art collections, along with the Story of Nottingham galleries, and the Sherwood Foresters Regimental Museum. Nottingham Industrial Museum – Housed in Wollaton Park, collections relating to textiles, transport, communications, mining and steam. Nottingham Natural History Museum – Based at Wollaton Hall, contains zoology, geology, and botany collections.