One Liberty Place

One Liberty Place green lighting. Photo by Thomas Koloski

Philadelphia YIMBY Observes Decorative Lighting at One Liberty Place in Center City

8:00 am on February 20, 2022 By Thomas Koloski

As the nighttime Philadelphia skyline is becoming brighter with new projects featuring decorative lighting, One Liberty Place has also made its mark on the dark night sky. Located at 1650 Market Street in Center City, the skyscraper was constructed 1987 and rises to a height of 945 feet and 61 floors. The tower was designed by Helmut Jahn of Murphy/Jahn and developed by Willard Rouse of Rouse and Associates. The structural design was crafted by Thornton Tomasetti and the tower was constructed by LF Driscoll between 1985 and 1987, with The Lighting Practice as the new contractor for the lights. In this feature, Philadelphia takes an extended look at the improved lighting on the crown of the trophy tower.

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One Liberty Place. Image by Nadia MacKenzie via ageofstock

Looking Back At One Liberty Place Shortly After Completion

7:30 am on January 16, 2022 By Thomas Koloski

Between 1984 and 1987, a new monolith was constructed in the city of Philadelphia. For a long time the skyline was dominated by beige and brown buildings along with City Hall, but the blue-glass One Liberty Place at 1650 Market Street in Center City has broken out of the blocky and old styles and also broke the unofficial 548-foot height limit. Designed by Helmut Jahn of Murphy/Jahn and developed by Willard Rouse of Rouse and Associates, the tower rises 945 feet and stands 61 stories tall. In this feature, Philadelphia YIMBY looks back at One Liberty Place shortly after its completion.

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One Liberty Place looking northeast. Photo by Thomas Koloski

Looking Back to the Moment When One Liberty Place Passed the Statue of William Penn Atop Philadelphia City Hall

7:30 am on January 10, 2022 By Thomas Koloski

For nearly 35 years, the Philadelphia skyline has been dominated by skyscrapers rising well above 500 feet in height. The idea to breach of the height limit informally established by the 548-foot-tall pinnacle of City Hall, also known as the “Gentlemen’s Agreement,” surfaced in 1984. The first tower to rise above the limit was One Liberty Place, a daring structure for the time that rises 945 feet and 61 stories above ground at 1650 Market Street in Center City. The project was designed by Helmut Jahn of Murphy/Jahn and developed by Rouse and Associates (which eventually became Liberty Property Trust), and was completed in 1987. In this feature, Philadelphia YIMBY takes a look back at when One Liberty Place passed the statue of William Penn on top of City Hall.

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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.

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One Liberty Place. Photo by Thomas Koloski

Looking at the Philadelphia Skyline from the Observatory Atop One Liberty Place

7:30 am on January 5, 2022 By Thomas Koloski

Philadelphia is home to several tall skyscrapers in Center City, with One Liberty Place among the most iconic in the group. The steel-framed tower rises at 1650 Market Street to a height of 945 feet and 61 stories above the ground. The skyscraper was designed by Helmut Jahn, who has unfortunately passed in May of last year, as part of the Liberty Place project developed by Rouse and Associates. At the moment, only two observatories operate in the city, as one has closed last year. Today we look at views from theh currently closed One Liberty Observation Deck, located on the 57th floor in the skyscraper’s gabled crown.

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