Our last photo update from San Francisco's next tallest building showed the naked steel skeleton of the building's floor plates enveloping the central concrete core. Significant progress has been made in the short two months since then, including the installation of the Salesforce Tower's first panels of glass skin.

Rendering of Salesforce Tower in the skyline, image via Pelli Clarke Pelli Architects

Developed by Boston Properties and Hines, the 326-metre (1,070-foot) supertall will serve as a shining beacon on the skyline, marking the burgeoning South of Market area with a bold design by Pelli Clarke Pelli Architects and Kendall / Heaton Associates. The dramatic 61-storey tower is to be accented by metal protrusions throughout the facade and a zipper element at the top of the building.

Cladding visible on the second floor, image by Forum contributor edwards

Consisting of 1.4 million square feet of office space, the project is positioned next door to the Transbay Transit Center, which will provide the region with a revitalized transportation hub. For tenants looking for a place to host casual gatherings or just to mix and mingle, the skyscraper will include a direct connection to the rooftop park that crowns the five-storey transit facility.

Cladding visible on the second floor, image by Forum contributor edwards

As the glass envelope begins its application, the solar sunshades that help frame them will likely be making their appearance soon as well. The Salesforce Tower takes advantage of the latest technologies to improve office comfort by incorporating innovative exterior air intakes on every floor. The devices will ensure a constant flow of fresh air into the work environment. Coupled with 13-foot ceilings and windows that nearly span the entire wall, the Salesforce Tower promises to provide an unmatched office atmosphere for its tenants.

Salesforce Tower construction in late June, image by Forum contributor edwards

Additional images and information can be found in the Database file linked below. Want to get involved in the discussion or share your photos? Check out the associated Forum thread or leave a comment at the bottom of this page.