Comcast Technology Center

Arthaus and Center City towers from the I-95. Photo by Thomas Koloski

Toward the Blue Yonder: Comparing Views from the Tallest Skyscrapers on the Philadelphia Skyline

8:00 am on January 6, 2022 By Vitali Ogorodnikov

High-rise development offer numerous advantages, including efficient use of valuable urban real estate, environmental benefits through resource use economies of scale and conservation of land, and dense, transit-friendly and pedestrian-favorable environments that create thriving cities. Then, of course, there are the lofty views that are available to dwellers of sky-high aeries. Using the formula of D = 1.22459 x Sqrt (H + 5.58), where D equals distance and H stands for the height of the building’s highest floor and 5.58 represents 5′-7″, the height of the average US adult in feet, we can calculate the longest unobstructed view distances on a clear day from any building level. Today YIMBY offers a comparison of views and view distances from the highest floors of some of the tallest buildings on the Philadelphia skyline.

A Look at the Lobby of the Comcast Technology Center, Philadelphia’s Tallest Building

7:00 am on December 22, 2021 By Thomas Koloski

The Comcast Technology Center at 1800 Arch Street in Center City is both the tallest building and one of the largest structures in Philadelphia, standing 1,121 feet tall and spanning over 1.5 million square feet of interior space. Completed in 2017, the supertall stands 60 stories high and features office space on its lower floors and a hotel on its upper levels, with an observation deck at the top. The project was developed by Liberty Property Trust and designed by Foster and Partners, with Thornton Tomasetti behind the structural design and LF Driscoll as the contractor. Gensler crafted the exquisite and sometimes bizarre interior of the main lobby, with an architectural style well-suited for the modern workforce and the general public alike. In this feature, Philadelphia YIMBY observes the east lobby of the Comcast Technology Center which is open to the employees and the public at limited times.

Comcast Technology Center. Photo by Thomas Koloski

Revising Construction of the Comcast Technology Center Before it Topped Out

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

Since 1987, when the unofficial “Gentlemen’s Agreement” that advised against building taller than City Hall was eliminated, multiple high-rises that stand well over 500 feet tall have dramatically changed the profile of Center City. The Comcast Technology Center had first joined the skyline at the very end of 2015, and now makes an incredible impact with its height of 1,121 feet and 60 stories as the tallest skyscraper in the city. Designed by Foster and Partners and developed by Liberty Property Trust, the building stands at 1800 Arch Street and houses Comcast corporate offices along with a Four Seasons hotel. In this publication, Philadelphia YIMBY looks back at the Comcast Technology Center before it topped out.

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.

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.

Philadelphia 1987 and 2020 south elevation. Model and image by Thomas Koloski

Philadelphia YIMBY Compares Massing Renderings of the 1987 and the 2020 Skyline

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

Over the decades, the Philadelphia skyline has seen many transformations with different iconic images, such as when City Hall stood all alone in the early 1900s. One of the key years in the high-rise history of the city is 1987, when One Liberty Place dramatically surpassed City Hall in height and opened later in the same year. Another key year is 2018, when the skyline gained its first supertall tower with the completion of the Comcast Technology Center. Today Philly YIMBY compares the skyline’s appearance in 1987 to its state in 2020.

The Philadelphia skyline as seen from the Walt Whitman Bridge. Photo by Thomas Koloski

Looking at Some of the Most Impactful Additions to the Philadelphia Skyline Since 2017

8:00 am on April 6, 2021 By Colin LeStourgeon

The Philadelphia skyline has long provided an iconic image for the city and the state, with high-rise buildings dating back to the late 19th century, the most iconic being the City Hall, which topped out in 1894 as the tallest habitable building in the world, a title it held until 1908. Each era of skyscraper construction has made a significant impact on the skyline, with prominent types of skyscrapers defining each time period. The city has recently seen a skyscraper construction boom, which began around 2017, with many high-rises completed and under construction since that time. Philadelphia YIMBY looks at some of the most impactful structures that the city has received during this period.

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