Modern York began as a Roman fortress city called Eboracum. "The legionary fortress lay on the east bank [of the Ouse river]; founded during the campaigns of Petillius Cerialis in AD 71-4, it was rebuilt by Agricola [Tacitus's father-in-law] c.79 and under Trajan, 107/8. Legio IX Hispana replaced VI Victrix perhaps in the 120s." Source: Oxford Classical Dictionary (3rd ed. revised).
"In the Middle Ages, York was home to great wealth and great squalor," according to History of York. "It was noisy and crowded: the city was filled with narrow lanes crammed with houses. Some had yards where they kept pigs and other animals. But there were also gardens and orchards within the city, and the open country and farmland was never far away."
Next video shows the medieval walls of York. Audio's sketchy, but turn up the volume.
Before the Roman invasion, Eboracum "was a stronghold of the Brigantes, the largest tribe in Britain," according to A Guide To The Ancient World, by Michael Grant. The next video is part one of a longer walking tour of this fantastic old city.
Part two here. Let's hope that the idiots in the current York government don't end up flooding the city with Muslim "refugees" in the name of compassion. With any luck, the fantastic results of the Brexit referendum will bring a measure of sanity back to England before it's too late.