One Hundred

St. Louis, MO

Built 2020

Mac Properties


520,000 sf / 380 ft / 316 units

Targeting Green Globes Certification


One Hundred is a new residential tower overlooking Forest Park in St. Louis. The tower, Studio Gang’s first project in the city, will rise to over 380 feet and include retail, amenities, parking, and residential apartments with views of the park to the west and the Gateway Arch to the east.

Four-story tiers are stacked over the height of the tower. The facade is angled to create generous outdoor spaces on top of each tier, providing terraces for a quarter of the apartments, as well as shared amenity space for the resident community atop the green roof podium.

Working to enhance the opportunities provided by the site orientation and environmental forces, the building’s leaf-shaped plan and tiered massing maximize its performance, reducing overall energy load and increasing occupant comfort.

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Tom Harris

The building reflects the changing light and weather in Forest Park, providing a dynamic backdrop for foliage and snowfall alike.

The apartments are specifically designed to connect people to views of Forest Park and the Gateway Arch. Each apartment features its own corner living room with double exposures that, in addition to offering panoramic views, enhance the amount and quality of daylight within the units. The design’s angled edges create this condition, which, together with tilted glazing, not only capture more daylight but also self-shade when necessary and provide the opportunity for natural cross ventilation.

The design of the building also provides for niche public and retail spaces at ground level adjacent to the park and defines a wider, more generous public streetscape, strengthening pedestrian connections between the Central West End district and Forest Park.

Consultant Team

Mac Development, residential Interiors

Magnusson Klemencic Associates, structural engineer

dbHMS, MEP engineer

Charles E. Jarrell Contracting Co, Design/Build mechanical engineer

Sachs Electric Company, Design/Build electrical engineer

DeLuca Plumbing, Design/Build electrical engineer

Stock & Associates Consulting Engineers, civil engineer

FIRE Solutions, Fire Protection

Arbolope Studio, landscape architect

Studio NYL, façade consultant

MorLights, lighting consultant

Counsilman-Hunsaker, pool consultant

WGI, parking consultant

Code Consultants, code consultant

Jenkins & Huntington, vertical transportation consultant

Core 10 Architecture, specifications consultant

Clayco, Construction Manager & General Contractor