Liberty Property Trust

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.

One Liberty Place Rainbow animated scheme from South Street. Photo by Thomas Koloski

My Liberty Lights Program Is Underway at One Liberty Place

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

Over the course of the past two years, the decorative illumination at the crown of One Liberty Place at 1650 Market Street in Center City has been under renovation, as it is being upgraded with powerful lights that can be animated into various schemes and colors. Designed by Helmut Jahn of Murphy/Jahn and developed by Rouse and Associates (later known as the Liberty Property Trust), the tower was completed in 1987 and stands 945 feet and 61 stories tall. The contractor for the illumination upgrade is The Lighting Practice, which has also decorated the W/Element Hotel. The new lighting system is integrated with the My Liberty Lights program, which allows certain users to change the exterior lights atop the building once per day for a duration of five minutes.

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.

Center City towers from North Broad Street. Photo by Thomas Koloski

One Liberty Place Lighting Nearly Complete with Upcoming Event in Center City

8:00 am on August 11, 2021 By Thomas Koloski

Over the course of the past few months, an upgrade of the decorative lighting system has been in progress at One Liberty Place at 1650 Market Street in Center City, where the light strips that highlight the angled top of the tower are being reworked. Designed by Helmut Jahn of Murphy/Jahn and developed by Rouse and Associates, the two massive skyscrapers of Liberty Place were the first in the Philadelphia skyline to boldly break past the informal 548-foot height limit established by the tower of City Hall nearly a century earlier.

Comcast Technology Center 2014 and current design from Spring Garden Street Bridge. Left: image by Foster and Partners. Right: Photo by Thomas Koloski

Comparing The 2014 and Final Design of The Comcast Technology Center

7:30 am on August 10, 2021 By Thomas Koloski

Soon after the completion of the 973-foot-tall Comcast Center in 2008, which stood as the tallest building in Philadelphia, local residents and outside watchers wondered what was next for the city skyline. Almost six years later, on January 15, 2014, the design for the Comcast Technology Center, then known as the Comcast Innovation and Technology Center, was revealed to the public. The tower would become the new tallest skyscraper in Philadelphia, planned to stand 1,121 feet tall at 1800 Arch Street in Center City, across the street from the previous record-holder. The design by Foster and Partners was an unfinished version of the current building, as many portions of the building had to be finalized. The developer of the Comcast Technology Center is Liberty Property Trust, which met its fate when it was purchased by Prologis Inc. In this YIMBY feature, we compare the 2014 design and the current version of the skyscraper using renderings, architectural models, and photographs.

Comcast Technology Center under construction July 2016. Photo by Thomas Koloski

Observing the Comcast Technology Center After the Topping Out of the Concrete Core

7:00 am on July 19, 2021 By Thomas Koloski

The majority of Philadelphia’s tallest skyscrapers stand in Center City to the west of City Hall, which include the Comcast Technology Center at 1800 Arch Street. The supertall, which is the tallest building in the city, has risen into the skyline between 2014 and 2017. Designed by Foster + Partners, the tower’s structure is compromised of a central concrete core surrounded with a steel frame, with the facade mostly clad in glass and metal. The tower was developed by Liberty Property Trust, which collaborated with Comcast to erect their second tower in the city. In this article, Philadelphia YIMBY takes a look back to when the Comcast Technology Center was under construction at the time when the core had just topped out.

Observing the Comcast Technology Center Shortly After Crane Removal

7:00 am on July 16, 2021 By Thomas Koloski

The Comcast Technology Center at 1800 Arch Street in Center City has dominated the Philadelphia skyline ever since it became the city’s tallest skyscraper in 2017. The tower rises 62 stories and 1,121 feet tall, topped with a bright beacon. The tower was designed by Norman Foster of Foster + Partners, who has done many well-known projects around the world notable for their exteriors of glass, metal, and decorative lighting. The developer of the project is Liberty Property Trust, which had also developed One Liberty Place when the company was known as Rouse and Associates under Willard Rouse. In this feature, Philadelphia YIMBY looks back at when the crane was first removed from the near-completed Comcast Technology Center.

Comcast Technology Center lantern testing from Pennsauken. Photo by Thomas Koloski

Looking Back At The Testing Of The Lantern On The Comcast Technology Center

7:00 am on June 13, 2021 By Thomas Koloski

The Comcast Technology Center at 1800 Arch Street in Center City was completed on August 12, 2019, when the hotel portion officially opened, becoming the tallest skyscraper in Philadelphia. The tower stands 1,121 feet and 60 stories tall, with a central concrete core and steel floor plates. The skyscraper was designed by Foster and Partners, which has designed several buildings that features metal highlights and bright lighting features, and developed by Liberty Property Trust, which used to be known as Rouse and Associates when Willard G. Rouse III ran the company before his death. Today YIMBY looks at the process of testing the lighting at the building’s lantern around the time of its completion.

Two Liberty Place from One Liberty Place. Photo by Thomas Koloski

Looking at Two Liberty Place, Philadelphia’s Fourth-Tallest Building, in Center City

8:00 am on June 8, 2021 By Thomas Koloski

The majority of the skyscrapers that dominate the Philadelphia skyline are the trophy towers that were built in the late 1980s. One of these buildings is the 848-foot-tall, 58-story Two Liberty Place at 50 South 16th Street in Center City, the city’s fourth-tallest building. The skyscraper is a part of the Liberty Place complex that consists of two towers connected by a mall and a hotel. The skyscraper was designed by Helmut Jahn, who also designed buildings such as MesseTurm in Frankfurt, Germany, 50 West Street in New York City, and the Bank of America Tower in Jacksonville, Florida, among many others. The developer of the project was Rouse and Associates, which eventually transformed into Liberty Property Trust, which built both of the Comcast skyscrapers that today dominate the skyline.

Observing The Comcast Technology Center Shortly After Topping Out

7:00 am on May 30, 2021 By Thomas Koloski

Over the past 40 years, Center City has become home to multiple structures over the height of 500 feet. Philadelphia City Hall was the tallest structure in Philadelphia from 1894 to 1986 at 548, then in 1987 the steel structure of One-Liberty-Place eventually passed the statue to soon top out its spire at 945 feet. The same developers of Liberty Place also developed the next tallest skyscraper in the city, the 974-foot Comcast Center from 2007 to 2017. In 2017, across the street to the west, the Comcast Technology Center became the tallest skyscraper in the city since 2017 and its first supertall skyscraper at 1,121 feet. For this development, Comcast had partnered with Liberty Property Trust, which was originally known as Rouse and Associates. The tower was designed by Foster and Partners, which has designed iconic structures such as the Gherkin in London and the Hearst Tower in Midtown Manhattan. Today Philly YIMBY looks back at the period when the iconic tower’s spire topped out.

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