As currently proposed, the structure would rise to a pinnacle height of 1,581 feet (482 m),[2] with the tower containing office space, a Hyatt hotel, and ground-level and underground retail.

175 Park Avenue was designed by Skidmore, Owings, & Merrill,[3] with WSP Global providing structural engineering services.

[2] The lobby of the building tapers outwards from its footprint in order to increase its visual separation from the adjacent Grand Central Terminal, and is defined by a web of interlaced steel columns which fan from several points at ground level, limited by the presence of rail infrastructure below the site.

[4] The tower is interspersed with outdoor terraces and culminates at a lattice crown, where the exterior columns again interlace echoing the design of the lobby facade.

[7] In February 2019, the media reported that TF Cornerstone, MSD Partners, and RXR Realty planned to redevelop the Grand Hyatt site.