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This iconic tower, positioned in a premier location, was designed to respond thoughtfully to both its urban context and its prominent skyline presence. The first 19 floors, extending up to 214 feet, present a strong rectilinear form that harmonizes with the historic block buildings lining Michigan Avenue. Additionally, the south face of this lower section slopes 18 feet to the south, providing clearance over the adjacent 1006 South Michigan Avenue building and allowing the tower above to have a long axis in the north south direction. The design of this base incorporates less glass, drawing inspiration from the punched openings common in the adjacent buildings.
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Located at the south end of Chicago’s Historic Michigan Avenue District, 1000M faced design constraints: respecting historic facades, limited curb cuts, and height restrictions. Though originally capped at 425 feet, the City amended the ordinance to allow up to 900 feet due to the site's significance. The final height was set at 832 feet. To overcome access issues, the Client acquired a parcel extending to Wabash Avenue, enabling vehicle and service access. The design includes a striking tower with a two-story lobby on Michigan Avenue and a perforated screen linking 1000M to its neighbor, plus a Wabash entrance with a porte-cochere for parking and deliveries.
Sustainability is central to 1000M’s design. To meet Chicago’s Sustainability Initiatives, the project targets a Two Green Globes certification. It includes high-performance glazing, a thermally efficient façade, and energy-efficient heat pumps. Advanced mechanical systems enhance performance, while operable full-height windows improve air quality. The building offers 26,588 sq ft of outdoor space, including large terraces on the 8th, 10th, and 21st floors, and an open-air, covered observation deck on the 73rd floor. Corner units also feature private balconies, maximizing residents’ connection to outdoor environments.
The structure of 1000M is a post-tensioned concrete design, typical of high-rise residential towers in Chicago. The tower’s bracing is provided by a robust core with four shear walls extending to the perimeter for the first 40 floors, offering necessary stiffness. The lower eight floors feature 6-foot square bulbs at the ends of these shear walls. As the building rises, stepping perimeter columns and thicker slabs support the diagonal facades that emerge in the top 50 stories. Floor slabs range from 8 1/2” to 10” thick, allowing for large upper-floor units. In areas of structural transition, such as the sloped south facade and podium-to-tower shift, flat, in-slab trusses balance the system. A central concrete core with integral buttress walls resists extreme wind forces, while tuned-sloshing damper tanks on the roof reduce sway, ensuring comfort during storms. The tower’s facade emerged from a desire to avoid an all-glass design, respecting Michigan Avenue’s historic structures, and reflecting the client’s preference for higher sill heights and more aluminum. The lower portion of the building mirrors nearby historic facades with profiled aluminum panels, while the tower above uses flat and profiled aluminum to accentuate its form. Segmented glass at the curved corners and a glass screen at the 73rd-floor terrace maintain the building's architectural purity.
The collaborative effort between developers and architect Jahn created a residential tower that not only offers luxurious living spaces but also contributes meaningfully to Chicago's architectural landscape.
Jahn is a globally recognized architecture firm founded 60 years ago, known for transforming cities through a shared passion for design, technology, and integrated practice. Rooted in cultural and site-specific research, we emphasize close collaboration with clients and partners to create authentic, high-performing architecture across four continents. Our diverse Chicago-based team works alongside top engineers, builders, and fabricators, blending aesthetics with engineering excellence. Inspired by our founders and led today by Evan Jahn, Philip Castillo FAIA, Scott Seyer AIA and Steven Cook FAIA, we remain curious and forward-thinking. We explore new materials, sustainable practices, and innovative solutions that define a responsible and dynamic built environment.
