Bloor street begins at the eastern edge of the Prince Edward Viaduct, which passes over the ravine holding the Don River. The street continues through to the Rosedale Ravine, marking the southern border of the affluent community of Rosedale. West of Parliament Street, the street passes just to the north of the large St. James Town housing project, which stretches west to Sherbourne Street. On the northern side of this section of Bloor are the forested slopes of the Rosedale Ravine. Between Sherbourne and Church Streets the street is lined by large office towers, mostly home to insurance companies. This area has long been the centre of the insurance industry in Canada.