Reaching the end of St Leonards Street you stand on some of York's most historically significant ground. Straight ahead is Gillygate. This is the main road out of the city to the north and follows the line of a Roman road which led through the Porta Principalis or North Western Gate of the Roman fortress. The remains of this fortress lie directly beneath your feet under tarmac. Here we have a clear view of Bootham Bar, probably the most attractive of the four bars (or gates) which lead into the city.		This was the main entrance to York from the north and the Forest of Galtres. Armed guards were stationed at Bootham Bar to conduct travellers through the forest, protecting them from wolves and robbers. Through a narrow archway on the right of the bar is a flight of steep steps. We climb these and find ourselves on the ramparts of the ancient city walls. Walking along the wall, following the line of Gillygate, we turn sharply right and are presented with a superb view of Dean's Park and the Treasurer's House.