History

One Liberty Place before topping of the spire. Photo from the Philadelphia Inquirer

Philly YIMBY Revisits the Topping-Out of the Spire atop One Liberty Place in Center City

7:00 am on September 28, 2021 By Thomas Koloski

The Liberty Place development in Center City holds a pivotal place in the Philadelphia skyline, having made a gigantic impact on the and the city’s image and its profile as a business hub. A pointed spire tops the tallest tower, the 945-foot-tall One Liberty Place at 1650 Market Street, outfitted with broadcasting equipment. The complex was designed by Helmut Jahn of Murphy/Jahn and developed by Rouse and Associates. In this feature, Philadelphia YIMBY shares images of One Liberty Place from the day the spire had topped out.

Commerce Square from Spring Garden Street Bridge. Photo by Thomas Koloski

Looking Back at the Construction of One Commerce Square at 2005 Market Street in Center City

7:00 am on September 23, 2021 By Thomas Koloski

In 1984, the unwritten Gentleman’s Agreement that forbade building above the 548-foot-high statue of William Penn atop City Hall was about to be eliminated when, in April, developer Willard Rouse proposed a skyscraper development that eventually became Liberty Place. The proposal apparently influenced more developers and architects to build towers above the former height limit. The Commerce Square twin towers were revealed at 2005 Market Street in Center City at the end of the year. Designed by I.M. Pei and Partners and developed by IBM and Maguire/Thomas Partners, the 41-story towers were not built simultaneously, as One Commerce Square was the first building finished in the complex.

Northeast Northern Liberties. Credit: Post Brothers

Northeast Northern Liberties: an Emerging Waterfront Hub in Search of an Identity

8:00 am on September 18, 2021 By Vitali Ogorodnikov

The latest entry on Philadelphia YIMBY’s First Anniversary Countdown, which looks at the most frequently mentioned article categories over the course of the past year, found North Philadelphia‘s Northern Liberties neighborhood at the 18th place, out of the 1,800+ categories surveyed. Yesterday’s entry outlined at the neighborhood’s history and general composition. Today we look at Northeast Northern Liberties, a former industrial hotbed turned no-mans-land that is now rapidly transforming into a major urban hub, and some of the challenges that the emerging district still needs to address.

Piazza Terminal rendering looking northeast from Germantown Avenue. Image via Post Brothers

Northern Liberties Scores the 18th Place on Philly YIMBY’s First Anniversary Countdown

7:30 am on September 17, 2021 By Vitali Ogorodnikov

The Northern Liberties neighborhood in North Philadelphia finds itself at the 18th place on Philadelphia YIMBY’s First Anniversary Countdown, which looks at the most frequently mentioned article categories over the course of the past year. The district’s ranking within the Top 20 is hardly surprising, given its significant extent, central location, proximity to the waterfront, ample prewar built stock, and widely available development-ready land. These factors have fueled the area’s resurgence since the 1990s, and growth continues unabated in the district to this day, with plenty potential still to spare.

Unfinished Liberty Place design model. Photo from Helmut Jahn

Visualizing the Under-500-Foot-Tall Early Iterations of Liberty Place on the Skyline

8:00 am on September 16, 2021 By Thomas Koloski

The Liberty Place complex is emblematic of the Philadelphia skyline as they played a key role in Center City‘s skyscraper growth. The towers currently stand 61 and 58 stories tall, with angled sharp crowns pointing toward to the sky, one tower capped with a tall and another with a short spire. The project was commissioned by Willard G. Rouse III of Rouse and Associates, who had originally pictured a $150 million 38-story tower rising to a height that measured somewhere under 500 feet. Just days after New Year’s Day in 1984, the building was first discussed in a publication about how Rouse won the bid for the site how it may become the city’s premier office tower. The architect, Helmut Jahn, was selected in March, and had produced a rapid succession of concepts under 500 feet, which eventually evolving well above that height. Today we share exclusive massing concepts of how the skyline would have looked if the towers were built to their originally planned height.

A Look at Early Iterations of Liberty Place When It Was Planned to Rise Under 500 Feet in Height

7:30 am on August 23, 2021 By Thomas Koloski

The Liberty Place complex in Center City is known for being the first building in Philadelphia to dramatically break the unofficial 548-foot height limit that was set by the statue of William Penn on top of City Hall. Upon completion, One and Two Liberty Place were the tallest skyscrapers on the skyline, standing at a height of 945 and 848 feet, respectively. The towers were designed by Helmut Jahn and developed by Rouse and Associates, which eventually became Liberty Property Trust. In this feature, Philadelphia YIMBY takes a look back at a number of early iterations of the complex when the towers were planned to stand around or under 500 feet in height.

The William Penn statue atop City Hall. Credit: James Mitchell via Wikipedia

Looking Back at the Former Proposal to Make the Statue of William Penn Atop City Hall Revolve

7:30 am on August 17, 2021 By Thomas Koloski

The 37-foot-tall statue of William Penn atop the City Hall clock tower brings the structure to a full height of 548 feet. As YIMBY discussed in yesterday’s story, the intended south-facing direction of the statue, crafted by sculptor Alexander Milne Calder, was changed at the last minute, and for nearly 127 years the figure has faced northeast. In this feature, Philadelphia YIMBY looks back at the onetime proposal to have the statue revolve around its axis so it could gaze upon the entire city.

The William Penn statue atop City Hall. Photo by Thomas Koloski

Looking Back at the Originally Intended Placement of the Statue of William Penn atop City Hall

8:00 am on August 16, 2021 By Thomas Koloski

The statue of William Penn has stood at the very top of Philadelphia City Hall in Center City for well over a hundred years, facing northeast. The large figure of the Quaker was crafted by sculptor Alexander Milne Calder, who also produced the smaller statues just above the clock house and around the entire building. The 548-foot-tall Philadelphia City Hall was designed by John McArthur Jr. and Thomas Ustick Walter, renown architects of their time. In this feature, Philadelphia YIMBY takes a look back at the original southern direction the statue was supposed to face and at the subsequent change.

Philadelphia skyline 2017 from New Jersey. Photo by Thomas Koloski

Looking Back At Developments Under Construction In 2017

7:30 am on August 8, 2021 By Thomas Koloski

Philadelphia has had certain key years when skyscraper construction saw a notable surge, when many developments were underway at the same time. For instance, much of the current Center City skyline took form in and just after 1987. Another key year for construction took place in 2017, when various high-rise projects spanned multiple neighborhoods. Most of these developments stood under 500 feet, with some barely noticeable from afar, yet others added significant bulk to the skyline. The tallest skyscraper under construction was the Comcast Technology Center, the city’s first supertall tower and still the city’s tallest building. In this publication Philadelphia YIMBY looks back to when this collection of developments was underway four years ago.

Fourth scheme of the PSFS Building. Image via George Howe and William Edmond Lescaze

YIMBY Presents Massing Renderings of the Fourth Design for the PSFS Building

7:30 am on August 5, 2021 By Thomas Koloski

In the past month, YIMBY has posted multiple publications on the PSFS Building and its history. The building stands at 1200 Market Street in Market East, Center City, with a height of 491 feet that dominates the local skyline even now, and did even more so when it was recently built. The tower was designed by George Howe and William Lescaze, who drew up several designs of the building prior to construction. In this feature, Philadelphia YIMBY shares the fourth iteration of the PSFS Building, which also had a physical model built.

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