The Westin Bonaventure Hotel and Suites is a 367-foot (112 m), 35-story hotel in Los Angeles, California, constructed between 1974 and 1976. Designed by architect John C. Portman, Jr., it is the largest hotel in the city. The top floor has a revolving restaurantand bar. It was originally owned by investors that included a subsidiary of Japanese conglomerate Mitsubishi Corporation and John Portman & Associates. The building is managed by Interstate Hotels & Resorts (IHR), and is valued at US$200 million.