passed to a consortium of creditors, including Related Companies, the CIM Group, and HFZ Capital Group, who completed construction and resumed sales that year. , seventy-five percent of the building's units had been sold. Architecture The building was designed by the architectural firm CetraRuddy. It features 360-degree views and contains 53 residential units, topped by a 6,850-square-foot triplex penthouse with a 586-square-foot wraparound terrace. Structural features The building's first five stories contain service and commercial spaces on the ground floor, above which are mechanical spaces and the building's amenities. These five floors act as a base for the building's tower, which is partly cantilevered over an existing three-story building to the east. The cross-section of One Madison's tower is 50 ft x 53 ft (15.25 m x 16.15 m), which makes it, at the height of 621 feet (189.3 m), one of the slenderest buildings in New York City; its height-to-width ratio is 12:1. To accommodate the architectural design of the building, which called for windows on all sides, lateral bracing that would normally be placed around the tower's perimeter is located in the center in a cruciform shape, creating internal shear walls in an optimal configuration. To cope with lateral winds and potential seismic forces, the shear walls were made with high-performance concrete. One Madison also utilizes a tuned liquid damping system on the roof consisting of three U-shaped reinforced concrete tanks full of water. These counter the building's lateral motion by about 3%. Apartments and amenities When Related Companies took control of One Madison, about half of the units were finished, with interiors designed by CetraRuddy, the architecture firm that designed the building's exterior. For the remaining apartments, which were in various states of completion, the new owners hired the interior design firm Yabu Pushelberg, which also created the interiors of the new main lobby and the amenity spaces, and hired the lighting design firm Cooley Monato Studio who developed architectural lighting of the apartments, the main lobby, the amenity spaces, and exterior facade. Rem Koolhaas designed the interiors of many of the condominium's originally planned amenities, which included a private screening room, an upscale restaurant run by chef Charlie Trotter, a spa and fitness room, and a wine cellar. After the building came under Related's control, the amenities were announced as including a lounge and screening room, private dining room, a fitness center and a room for