Great Britain has many famous places of interest including university cities like Oxford and Cambridge, Shakespeare's birthplace of Stratford-upon-Avon, and cities such as Cardiff, Edinburgh, and Glasgow. Stratford-upon-Avon is a small town associated with William Shakespeare, who was born and buried there. The Royal Shakespeare Theatre in Stratford only performs Shakespeare's plays. Oxford's most well-known feature is its ancient university founded in the 12th century, comprised of independent colleges mixed with other buildings. Edinburgh is a historic city featuring Edinburgh Castle and popular festivals, while Stonehenge is an ancient prehistoric monument comparable to the Egyptian pyramids in its significance to tourists.