Responding to the compact 25 by 100 foot site, one of the features of the project is a 12 by 20 foot moving gallery, which connects the upper four exhibition floors and allows visitors to move gradually between levels. It is a prominent feature along the Bowery, visible from the street, its gentle pace contrasting with the fast-moving traffic. At any given floor, the exhibition space can be extended by parking the moving room as required, with an additional elevator and stairs providing alternative access.

The gallery offers a range of exhibition spaces, which vary in proportion and ambience. The design incorporates a double-height, 27-foot high exhibition space at street level, with a sky-lit gallery, a mezzanine floor, a sculpture terrace overlooking a park, and private viewing galleries on the fourth and fifth floors. A setback at the sixth floor marks the location of the gallery’s administrative offices. Works of art will be stored primarily in the basement, while a library is located at the top of the building, below the mechanical floor. The milled glass facade that houses the moving room acts as a buffer zone, protecting the building from extreme temperatures and acoustically insulating the gallery spaces.

Norman Foster commented:

'The concept for Sperone Westwater represents both a response to the Bowery’s dynamic urban character and a desire to rethink the way in which we engage with art in the setting of a gallery. The moving gallery animates the exterior of the building and creates a bold vertical element within. Like a kinetic addition to the street, it is a lively symbol of the area’s reinvention and a daring response to the Sperone Westwater’s major program. I hope that artists will be inspired by the gallery’s new spatial and structural possibilities.'