The City's control of the area of St George's Fields allowed its development. From 1750 the creation of the new roads associated with the new Westminster Bridge and the improvements to the old London Bridge created the traffic nexus at Newington which because of these changes became known as Elephant and Castle, and the junction of St George's Circus was required to connect these with the 1769 Blackfriars Bridge Road / London Road. The City also decided to relocate from Moorfields the Bethlem Royal Hospital in 1815. The location at the edge of the territory it had control of in St George's Fields, the site of the Dog and Duck tavern, was thought at the time to be sufficiently rural for the institution but also convenient to the built up area.