Allied Properties REIT and RioCan REIT announced today that Index Exchange has agreed to lease up to 200,000 square feet of gross leasable area at The Well Tower, 8 Spadina Avenue, starting in 2022 when the tower opens. The 36-storey office tower, designed by Hariri Pontarini Architects, will be joined by six residential towers on the site, all rising above a retail base.