The Calgary City Centre Development in the Eau Claire district of downtown Calgary combines commercial office, luxury residential condominiums, live-work, and retail components. The 40-storey signature office tower will provide over 850,000 sf of class A rental space. The tower is being designed to a LEED silver standard incorporating floor to floor glazing, raised floor systems, intelligent lighting controls, and shading devices. A unique crown creates an instantly recognizable addition to the Calgary Skyline, with dramatic evening lighting that steps down providing dramatic views over the city and mountains will.750,000 sf of hotel / condominium development will consist of an 8-storey, 150-room, 5-star hotel, topped by a 400-unit residential condominium. Both residents and office tenants will share the extensive amenities of a state-of-the-art spa and fitness facility including an indoor swimming pool and rooftop terraces. A two-storey podium will contain retail, tenant services, and restaurants all linked via bridges to the extensive Calgary +15 walkway system. A large landscaped public courtyard integrating extensive green roof areas will be accessible from the +15 podium level. Four underground levels provide tenant and public parking for over 1000 cars.Zeidler Partnership Architects is working in joint venture with BKDI Architects.