Oxford is the oldest university in the English-speaking world, and you feel it everywhere. There was teaching here in some form by 1096, and the university grew fast after 1167, when Henry II stopped English students from going to Paris. In 1209, after a fight with the townspeople, a group of scholars fled east to Cambridge, where they started what became its university. The university isn't one campus but a federation of more than three dozen colleges, each with its own walls, chapel, dining hall and gardens, which is why the center looks like a maze of medieval quadrangles behind locked gates. Some open to visitors, and they're the reason to come.
It's a small city, about 160,000 people, and a busy one, with students on bikes, tour groups and a famous traffic problem. Five days are enough to see the best colleges without rushing, the Bodleian Library and the museums, most of them free, to go punting on the river, walk out to the riverside pubs where Tolkien and Lewis drank, and spend a day at Blenheim Palace.
This plan starts on a Wednesday. Day one is the heart of the university, day two Christ Church, Magdalen and the river, day three the museums and Port Meadow, day four Blenheim Palace, and day five, a Sunday, the castle, Merton, a roast and a walk along the Thames. For the bigger picture, see our page on the United Kingdom.