Built for pleasure and relaxation, beautiful Bath has been a well-being destination since Roman times. Bath's extraordinary array of architectural treasures has earned the whole city UNESCO World Heritage Site status. Home to one of the world's best-preserved Roman bath houses – cited here because of hot springs that bubble up at a toasty 46°C degrees. The honey-colored colleges arrayed in splendor beside the river, the university town of Oxford is a seductive vision of medieval learning and modern charm. Modern visitors flock to Oxford to explore the 200 year old colleges, housed for the most part in their original historic buildings, and to admire shared university resources such as the magnificent Bodleian Library and Christ Church. One of the world's most visited cities, London has something for everyone: from history and culture to fine food and good times. The city's buildings are striking milestones in a unique and beguiling biography, and a great many of them – the Tower of London, Westminster Abbey, Big Ben – are instantly recognizable landmarks.