The Rainbow Room was originally designed by architect Wallace K. Harrison, of Rockefeller Center's Associated Architects, as well as interior designer Elena Bachman Schmidt.
Harrison was one of the Associated Architects' principals, but he was not the complex's main architect; that distinction belonged to Raymond Hood.
However, Hood's health was deteriorating by 1933, and as the months passed, Harrison had an incrementally increased involvement in Rockefeller Center's design.
John R. Todd, the main consulting architect, attributed the terrace layout of the Rainbow Room to one of Harrison's designs.
Schmidt, a one-time apprentice of Elsie de Wolfe, contributed to the design of the interior decor, such as the furniture, curtains, and elevator doors.
Vincente Minnelli who would later become a film director, was assigned to help Schmidt select the colors of the walls.
The walls were ultimately decorated in a plum purple pattern, as were the blinds and linens in the Rainbow Room.
The restaurant's original architectural style was characterized as something that "bows to the ladies [and] steps back in a kind of restrained Oriental way" by the magazine Arts & Decoration, and as "modern, like most post-Repeal ventures" by Architectural Forum.
The 1987 renovation brought the Rainbow Room into an "American Modern" or simplified classical style.

The Rainbow Room occupies the eastern part of 30 Rockefeller Plaza's 65th floor, which occupies a 13,500-square-foot (1,250 m²) footprint.
The central part of the floor features elevator banks, restrooms, a gallery, and a private dining room.
The western part houses Bar SixtyFive and an outdoor terrace.
The restaurant proper occupies a 4,464-square-foot (414.7 m²) space: its eastern and western walls are 62 feet (19 m) long, while its northern and southern walls are 72 feet (22 m) long.
Entrance to the Rainbow Room is from the west, and two small staircases from the western wall extended to the northeast and southeast so as to avoid the rotating dance floor.
A raised platform at the northwest corner of the room allows a full view of the space.
The seats of the Rainbow Room are organized in "tiers".
The northern and southern walls, as well as an alcove on the Rainbow Room's east end, offer single-tiered seating, while the northeast and southwest corners contain double-tiered seating.
Between the staircases on the restaurant's western side, there is also a platform for bands and a shallow balcony for entertainers.
The handrails on the staircases behind the platform contain brass mullions with glass panes between each mullion.
There are also stairs and a dumbwaiter behind the platform, which lead to the 64th floor kitchen.
False columns on the eastern wall conceal small compartments for operating the platform's floodlights.
Private events are also hosted in several banquet rooms on the 64th floor.

The double-height restaurant contains twenty-four 24-foot-high (7.3 m) windows, which surround the space so as to give it a "vista"-like quality.
Each window contains a blind that can be adjusted vertically, and there are radiators at the foots of many of these windows.
The restaurant is notable for a revolving circle-shaped dance floor, which was inspired by the long-closed Murray's Roman Gardens on 42nd Street.
The 32-foot-wide (9.8 m) floor can rotate in either direction and can make a full revolution every 3–5 minutes.
In the 1987 renovation, the rotating floor was covered with a carpet design consisting of a "compass rose, sort of a star, surrounded by two sets of diamond patterns, each within a circular band", which was similar to the floor's original carpet design.
During lunchtime, the dance floor would stop rotating and an extra 70 seats could be placed on the stationary dance floor.
The Rainbow Room's rotating dance floor is said to draw its inspiration from the Round Room in the Carlu, a restaurant that Jacques Carlu designed in Toronto.

Above the dance floor hang several concentric "rings" that recess into the ceiling from outside to inside, with the largest ring measuring 47 feet (14 m) a
The Rainbow Room was originally designed by architect Wallace K. Harrison, of Rockefeller Center's Associated Architects, as well as interior designer Elena Bachman Schmidt. Harrison was one of the Associated Architects' principals, but he was not the complex's main architect; that distinction belonged to Raymond Hood. However, Hood's health was deteriorating by 1933, and as the months passed, Harrison had an incrementally increased involvement in Rockefeller Center's design. John R. Todd, the main consulting architect, attributed the terrace layout of the Rainbow Room to one of Harrison's designs. Schmidt, a one-time apprentice of Elsie de Wolfe, contributed to the design of the interior decor, such as the furniture, curtains, and elevator doors. Vincente Minnelli who would later become a film director, was assigned to help Schmidt select the colors of the walls. The walls were ultimately decorated in a plum purple pattern, as were the blinds and linens in the Rainbow Room. The restaurant's original architectural style was characterized as something that "bows to the ladies [and] steps back in a kind of restrained Oriental way" by the magazine Arts & Decoration, and as "modern, like most post-Repeal ventures" by Architectural Forum. The 1987 renovation brought the Rainbow Room into an "American Modern" or simplified classical style.
The Rainbow Room occupies the eastern part of 30 Rockefeller Plaza's 65th floor, which occupies a 13,500-square-foot (1,250 m²) footprint. The central part of the floor features elevator banks, restrooms, a gallery, and a private dining room. The western part houses Bar SixtyFive and an outdoor terrace. The restaurant proper occupies a 4,464-square-foot (414.7 m²) space: its eastern and western walls are 62 feet (19 m) long, while its northern and southern walls are 72 feet (22 m) long. Entrance to the Rainbow Room is from the west, and two small staircases from the western wall extended to the northeast and southeast so as to avoid the rotating dance floor. A raised platform at the northwest corner of the room allows a full view of the space. The seats of the Rainbow Room are organized in "tiers". The northern and southern walls, as well as an alcove on the Rainbow Room's east end, offer single-tiered seating, while the northeast and southwest corners contain double-tiered seating. Between the staircases on the restaurant's western side, there is also a platform for bands and a shallow balcony for entertainers. The handrails on the staircases behind the platform contain brass mullions with glass panes between each mullion. There are also stairs and a dumbwaiter behind the platform, which lead to the 64th floor kitchen. False columns on the eastern wall conceal small compartments for operating the platform's floodlights. Private events are also hosted in several banquet rooms on the 64th floor.
The double-height restaurant contains twenty-four 24-foot-high (7.3 m) windows, which surround the space so as to give it a "vista"-like quality. Each window contains a blind that can be adjusted vertically, and there are radiators at the foots of many of these windows. The restaurant is notable for a revolving circle-shaped dance floor, which was inspired by the long-closed Murray's Roman Gardens on 42nd Street. The 32-foot-wide (9.8 m) floor can rotate in either direction and can make a full revolution every 3–5 minutes. In the 1987 renovation, the rotating floor was covered with a carpet design consisting of a "compass rose, sort of a star, surrounded by two sets of diamond patterns, each within a circular band", which was similar to the floor's original carpet design. During lunchtime, the dance floor would stop rotating and an extra 70 seats could be placed on the stationary dance floor. The Rainbow Room's rotating dance floor is said to draw its inspiration from the Round Room in the Carlu, a restaurant that Jacques Carlu designed in Toronto.
Above the dance floor hang several concentric "rings" that recess into the ceiling from outside to inside, with the largest ring measuring 47 feet (14 m) a
Rainbow Room