Tiffany & Co. Jewelry Store

In 1837 Lewis Tiffany and John F Young used $1000 from Tiffany's father to open a stationery and 'fancy goods' store with fixed prices marked on the items for sale as Tiffany & Young. They only accepted cash payments.

OMA renovated and expanded the 10-storey limestone building, marking its first full-scale renovation since the original opening. They also added a three-storey glass extension to the rooftop to hold gallery and event spaces and can be lit up at night. The extension consists of two stacked glass volumes. The bottom volume is split across two storeys and recessed from the edge of the roof to create a small terrace. The cantilevered volume is clad in panes of undulating glass that was shaped by draping it over a mould in a technique known as slumping. These panels of slumped glass contrast with the simple glazing below to leverage their "two different qualities and distinct advantages". OMA chose the slumped glass because it is "structurally favourable and requires less vertical support" as well as having a subtle "mirrored" finish. 
Elevator cores were moved to the external walls to create a more free-flowing floor plan in alignment with the entranceway. Architect Peter Marino was responsible for revamping the interiors of the building's existing 10 storeys. He added metallic detailing, carpets and wall treatments.