History

Mellon Bank Center. Photo via Elizabeth Day Art & Architectural Illustration

A Look at the Former, Taller Iteration of Mellon Bank Center, Center City

8:00 am on February 12, 2021 By Thomas Koloski

The 824-foot Mellon Bank Center at 1735 Market Street was completed in 1990. Originally, the tower had a similar design yet with a taller shape and several other differences. Designed by Kohn Pedersen Fox and developed by CommonWealth REIT, the tower would have stood 880 feet tall and would have featured projecting floor space at the corners up to an estimated height of 400 feet. The crown would have also appeared more skeletal than it looks today. Stone patterns all around the base are different.

American Commerce Center rendering via Kohn Pendersen Fox

The Story of the American Commerce Center, Once Planned as Philadelphia’s Tallest Tower

8:00 am on February 10, 2021 By Thomas Koloski

During the construction of the first Comcast Center tower, many wondered whether the 975-foot-tall skyscraper would rank as the city’s tallest for much longer. Just a few months before the former’s topping out, details were released about the American Commerce Center at 1800 Arch Street, a proposal that stunned many development watchers with its 1,510-foot height. The project was being developed by Hill International Real Estate Partners and designed by Kohn Pendersen Fox, a firm that is also behind the 792-foot-tall Mellon Bank Center, currently the city’s fifth-tallest building, and Arthaus, a 542-foot-tall skyscraper currently under construction. The development was ultimately canceled and the 1,121-foot-tall Comcast Technology Center was built at the site.

Philadelphia skyline from South Street Bridge. Photo by The Philadelphia Inquirer

The Illustrated History of Philadelphia’s Skyscraper Boom of 1984-1991

8:00 am on January 28, 2021 By Thomas Koloski

The Philadelphia skyline is anchored by a group of particularly tall buildings, but just 40 years ago, not a single tower rose over 548 feet, the height of the City Hall tower that was completed in 1901. An informal “gentlemen’s agreement” held towers back from rising above the limit, but no developer was successful until One Commerce Square was approved in 1984, which was soon followed by a series of even taller skyscrapers. Philly YIMBY looks at the history behind these Center City buildings, which shaped a major portion of the Philadelphia skyline as we know it today.

The Poplar Nears Completion at 900 North 9th Street in Poplar, North Philadelphia

8:00 am on January 24, 2021 By Thomas Koloski

Completion approaches at The Poplar, a renovation project in progress at 900 North 9th Street in Poplar, North Philadelphia. Designed by Cosica Moos Architecture, which is responsible for exterior as well as interior design, and developed by the Post Brothers, the 400,000-square-foot project transforms the 11-story Quaker Building, a factory loft built in 1918, into a 285-unit residential building. The redevelopment adds a striking new color to the exterior, a rooftop amenity deck, and units that come in multiple sizes.

One Liberty Place from Cira Green. Photo by Thomas Koloski

Designing One Liberty Place, the Tower that Transformed Philadelphia’s Skyline

8:00 am on January 18, 2021 By Thomas Koloski

One Liberty Place at 1650 Market Street is an intricately designed skyscraper has dominated the skyline of Center City for over three decades. Designed by Murphy/Jahn and developed by Rouse and Associates, the tower is clad in a pattern of stone, metal, and glass that rises up to the angled crown and the thin spire. The tower first rose to its final 61-story height in the beginning of 1987, when the top floor was assembled beneath the future spire. Philly YIMBY looks back at the design process by architect Helmut Jahn via drawings from 1984, which show multiple design iterations.

PECO Building with the new display. Photo by Thomas Koloski

Crown Lights Restored Atop the PECO Building at 2301 Market Street in Center City West

8:00 am on January 9, 2021 By Thomas Koloski

An upgrade has been completed for the lighting array atop the PECO Building at 2301 Market Street in Center City West. Designed by H2L2 (Harbeson, Hough, Livingston & Larson), the building was completed in 1970, which was soon followed by a number of major high-rise developments in Center City. The tower rises to a total of 27 stories and 384 feet, an an impressive height for its time. While the tower does not feature an outstanding design, it is widely known for its tenant, the PECO Energy Company, which serves customers across the tri-state area and all over the country. However, the tower is best known for its 38-foot-high screen spanning every face on top of the tower, measuring 148 feet across on the north and south façades and 71 feet across the east and west faces. Over the decades, more than 17,500 digital messages have scrolled across the display.

How One Liberty Place Revolutionized the Philadelphia Skyline

8:00 am on January 5, 2021 By Thomas Koloski

In August 1987, the 945-foot-tall One Liberty Place officially opened at 1650 Market Street as Philadelphia’s tallest skyscraper, soaring above the long-held unofficial height limit of 548 feet, set by the tower of City Hall in 1901. This remarkable skyscraper with a fantastical design ultimately led to the city gaining a new cluster of tall and massive skyscrapers that define the skyline to this day. In this feature, Philadelphia YIMBY explores the building’s progress from concept to reality, as well as its tenure as the city’s tallest skyscraper for 31 years.

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