The Deloitte Tower (French: Tour Deloitte) is a 26-storey office building in Montreal, Quebec, Canada, located between Windsor Station and the Bell Centre. It is the city's first privately owned and financed commercial office tower to be built in more than 20 years. Completed in May 2015, the building features 495,000 square feet (46,000 m2) of office space, and 20,000 square feet (1,900 m2) of retail space. It is named for professional services firm Deloitte, which occupies 160,000 square feet (15,000 m2) of office space in the building. It also houses the headquarters of Rio Tinto, which relocated from the Maison Alcan. The company occupies approximately 190,000 square feet (18,000 m2) on the top eight floors of the building. The Deloitte Tower is planned as part of a larger, multiphase,