Kapoor's shiny 56 Leonard bladder — resembling a smaller, squashed version of his Chicago "The Bean" landmark — made quite a splash in early renderings for the Jenga-like Manhattan condo tower in 2008, but overcoming various fabrication obstacles has not been easy and thus pushed back the final completion date of the development's original vision.

"In order to make the Leonard Street sculpture installation more
expeditious, and to save costs, it was decided to build the precision
components such that they could be tightly fit together, with the seams
thereby becoming nearly invisible hair line cracks," the sculpture's fabricators, Performance Structures, Inc, explained in a statement published by Tribeca Citizen.

"Another significant difference between the Leonard Street sculpture and Cloud Gate is the suspension system. [...] The Leonard Street sculpture has a different support mechanism. Instead of a single large support frame, each slice has its individual support frame. The support frames for the bottom slices are each bolted to the plaza, and the slices themselves are suspended by means of cables."