Holborn Circus is a five-way junction at the western extreme of the City of London, specifically between Holborn (St Andrew) and its Hatton Garden (St Alban) part. Its main, east–west, route is the inchoate A40 road. It was designed by the engineer William Haywood and opened in 1867. The term circus describes how the frontages of the buildings facing curved round in a concave chamfer. These, in part replaced with glass and metal-clad buildings, remain well set back.