By Jared Ebersole in Video 19 Sep 2026

The Shed: Eight Million Pounds of Moving Architecture

At Hudson Yards, a rolling shell turns a plaza into a performance hall. The engineering inside explains why this unusual arts center moves.

Beside the High Line at Hudson Yards, The Shed makes an unusually literal promise: the building can change to fit the art. Its enormous outer shell slides away from the permanent structure and across an adjoining plaza, bringing walls, a roof, and theatrical equipment along for the ride. A patch of outdoor space becomes a room.

The moving shell weighs roughly eight million pounds. Yet its journey takes about five minutes, according to structural engineer Thornton Tomasetti. That combination of mass and mobility supplies the spectacle. The more consequential idea is what happens afterward: artists gain a space whose boundaries can be rearranged around their work. Thornton Tomasetti

The Shed opened on April 5, 2019, following a city-led search for a cultural use at the southeastern edge of the West Side Railyard. In 2008, Hudson Yards Development Corporation selected a proposal by lead architect Diller Scofidio + Renfro and collaborating architect Rockwell Group. Their task involved an awkward question for any architect: how do you design an arts center before knowing all the kinds of art it will eventually contain? The Shed’s building history

Where it is

The Shed, Bloomberg Building
545 West 30th Street
New York, NY

The answer combines a permanent stack of rooms with an enclosure that can leave that stack behind. The fixed building contains galleries, a theater, and spaces for rehearsal and artistic development. Extending the shell creates the McCourt, a hall of approximately 17,000 square feet. The expansion adds a major performance space; it does not double every floor of the building. The Shed’s building guide

This arrangement gives the institution two different ways to accommodate a project. An exhibition can occupy a conventional gallery upstairs, while a production needing greater height or a less prescribed relationship between performers and audience can use the McCourt. Flexibility begins with that choice, before anything moves.

The mechanism owes more to industrial equipment than to a conventional retractable roof. Six wheel assemblies, called bogies, carry the shell along steel rails. Thornton Tomasetti describes 16 individual wheels, each six feet tall, grouped within those assemblies. The entire enclosure travels approximately 114 feet, using technology associated with gantry cranes. When retracted, it nests around the fixed building; when extended, it encloses the plaza. Large lifting doors allow another configuration: a covered pavilion open along its edges. Thornton Tomasetti’s engineering account

That motion explains the frequently repeated comparison with a Toyota Prius. Theater consultant Peter Rosenbaum described the drive in a 2019 interview as six 15-horsepower motors. It is a striking illustration of relatively modest motor power moving a tremendous load, although published technical accounts differ on the motor count. The essential distinction is between rolling a supported structure slowly along rails and lifting its full weight into the air. The wheels carry the load throughout the journey. Fisher Dachs Associates interview

The shell’s soft, quilted appearance also serves an engineering purpose. Its steel frame carries cushions of ethylene tetrafluoroethylene, or ETFE, a lightweight polymer. In an account published by the Ornamental Metal Institute of New York, project architect Robert Katchur explained that this material reduced the weight burden compared with glass and accommodated the demands of a moving enclosure. Air supplies keep the cushions inflated, with sensors adjusting pressure to weather conditions. Ornamental Metal Institute of New York

Daylight passes through that skin, but a performance venue also needs darkness and acoustic control. The same project account describes substantial blackout shades designed to absorb sound as well as exclude light. Their rolling mechanism draws on sailing technology. The apparent simplicity of a glowing outer wall therefore conceals several systems, each addressing a different requirement: structure, enclosure, illumination, and sound. The Shed’s facade and acoustic systems

For an artist, those adjustments change the character of the room. A luminous enclosure suggests one kind of installation; a darkened space permits projections or carefully controlled theatrical lighting. Opening the perimeter doors changes the relationship with the surrounding plaza again. The architecture offers a sequence of settings rather than a single atmosphere that every production must accept.

The connection to the permanent building is equally deliberate. Diller Scofidio + Renfro describes adjoining galleries as potential extensions of the main hall, with an expanded audience of up to 3,000 in the design configuration. That figure is best understood as a particular arrangement, not a universal ticket capacity. The Shed’s own venue information notes that staging and backstage needs affect the audience a production can accommodate. Architect’s project description, The Shed’s venue information

Then comes the less photogenic challenge: getting a show into place. The McCourt’s lifting doors are large enough for trucks to enter from the plaza and unload directly into the performance space. Overhead, the ceiling serves as a working theatrical deck. These provisions shorten the distance between delivery and installation, making the large room useful to the people who actually build productions. Project team’s account

Fisher Dachs Associates designed overhead rigging with 80 chain motors and developed portable, telescopic seating sections that can move between floors by freight elevator. Lighting and rigging travel with the shell itself. The consultants also planned recurring truss arrangements to reduce the need to reposition equipment between events. A five-minute building movement still leaves the separate work of assembling, checking, and rehearsing a show. Fisher Dachs Associates interview

There is an older architectural ambition behind all this machinery. The architects identify the Fun Palace, conceived by British architect Cedric Price and theater director Joan Littlewood in the 1960s, as an influence. That unrealized project imagined a cultural building capable of responding to changing activities. At The Shed, an adaptable framework became a physical system of rails, doors, galleries, and theatrical infrastructure. Diller Scofidio + Renfro

Watching the shell move makes architecture seem unexpectedly temporary. A wall crosses the plaza, a roof follows, and the boundary between inside and outside shifts with them. The lasting achievement will depend on what artists do with those options. The machinery gives them an unusual starting point: even the room is available for reconsideration.