Rockefeller Center Underground Concourse: Midtown’s Subterranean City

The underground network beneath Rockefeller Center was on the drawings from the start. In December 1931, the Rockefeller Center Corporation put forward an expanded plan for an underground pedestrian mall: roughly 0.75 miles of passages, 34 feet below street level, all of it air-conditioned and lined with shops — a shopping district under the sidewalk. The ambition ran further than retail. The plan included a series of people-mover tunnels, modeled on the small subway that serves the U.S. Capitol, that would have linked the complex to Grand Central Terminal and Penn Station. A scaled-down version went before the New York City Board of Estimate in October 1933: two vehicular tunnels carrying 49th and 50th Streets beneath the entire complex, a subterranean pedestrian mall joining all the buildings, and a 125-by-96-foot sunken lower plaza tied to the mall by a wide concourse running under the RCA Building. The full scheme never materialized. The people mover was never built, and the cross-town vehicular tunnels were abandoned; trucks reached the underground delivery rooms through a single truck ramp at 50th Street instead. What did get built — opening as a 25-shop mall in May 1935 — was the durable core of the idea: a network of shop-and-restaurant-filled passages stretching from 47th to 51st Streets between Fifth and Seventh Avenues, tying every building in the complex into one connected system. It was the physical version of the planners' boast that Rockefeller Center was a "city within a city," a place where an office worker could shop, eat, and catch the subway without ever surfacing.

The sunken plaza that anchors the whole scheme nearly killed it. An early 1931 scheme showed a sunken oval plaza with a central fountain, planted and lively — but the architects spotted the flaw: pedestrians could descend, admire the view, and leave again without ever setting foot in the shopping concourse. The plan was abandoned. The scheme as constructed sealed off the western stairway, the "escape hatch," so Fifth Avenue pedestrians were drawn by curiosity and gravity down the steeply sloped promenade of the Channel Gardens to a rectangular sunken plaza about 18 feet below ground. Once down there, the choice was stark: enter the shopping concourse, or climb back up. The architects bet that most people would choose the concourse, and they were right. Even so, the lower plaza in front of the RCA Building — really just an entrance to the underground shops — stayed stubbornly boring. The shops that opened around it failed. Restaurants moved in, but diners had a static open space to look at. Then, on Christmas Day 1936, the center's managers tried something improvised: a temporary ice rink. They had heard about a Cleveland inventor, M. C. Carpenter, who had perfected a system for making artificial ice for outdoor rinks, and they set one up in the plaza. It was an immediate success. The rink became a permanent fixture, the plaza became a destination, and the sunken level that had been a retail problem became one of the most photographed spots in New York.

For decades the concourse ran on its 1935 bones. In 1999, the complex's owner Tishman Speyer undertook a renovation meant to make the underground retail more noticeable and draw more upscale tenants. The original bronze ornaments and lighting were replaced, air-conditioning was installed throughout, two passageways were demolished, and both the ground-level and underground retail spaces were refurbished — the 1930s shopping corridor dragged into the expectations of the modern mall: brighter, clearer, legible to a pedestrian stepping off the 47th–50th Streets subway platform. The logic behind it reached back to the original design. The center's transportation committee had worked with the city so that the new Sixth Avenue subway could feed commuters straight into the complex, and the concourse shops meant office workers could get what they needed without venturing far. The 1999 renovation was the same idea, refreshed: keep the commuter's path past the shops, keep the subway connected, keep the whole center functioning as its own district. That promise still holds. The concourse remains the part of Rockefeller Center that most literally delivers on it — a stretch of midtown you can cross from 47th to 51st Street, through shops and past the ice rink, entirely out of the weather.

The planners' underground ambitions were not only about shoppers. The updated 1931 plan called for a pair of four-lane roadways running beneath the pedestrian mall, with delivery ramps feeding a central loading area 320 feet long and 180 feet wide, 34 feet below ground — a freight district under the shopping district. The full version of that scheme never got built: the complex-wide vehicular tunnels were abandoned, and trucks reached the underground delivery rooms through a single truck ramp at 50th Street instead. But the instinct behind it survived. The center was designed with an elaborate network of garages and underground ramps so that deliveries and shipments could move without adding to the congestion of midtown's streets. It was the same "city within a city" logic: the complex would handle its own freight, commuters, and shoppers on its own levels. The transportation committee that brought the Sixth Avenue subway to the complex's doorstep was solving the people side of the same problem — feeding tens of thousands of workers into fourteen buildings without choking the streets above. Walk the concourse today and the 1999 renovation reads as the consumer face of that system. The delivery ramps and loading rooms are still down there too, doing the unglamorous half of the original plan.

Hero photo: Marc Flores, CC BY 3.0, via Wikimedia Commons.

Gallery photos: DanielPenfield (CC BY-SA 4.0), Transpoman (CC BY-SA 4.0) via Wikimedia Commons.