Skyline massing

Philadelphia skyline with unbuilt proposals. Image and models by Thomas Koloski

The Unbuilt Skyline: a Comprehensive Look at Philadelphia’s Major Canceled Skyscrapers

8:00 am on March 22, 2021 By Thomas Koloski

The Philadelphia skyline has grown enormously over the past few decades, yet there are many formerly planned towers that were once planned yet were never completed. Philly YIMBY recently ran a series of articles that shined a spotlight on a number of unbuilt buildings. The designs came in various unique shapes: some featured curves, some boxy, and others with sharp angled cuts that gave them distinct character. While some were notably more appealing than others, even the most subpar of these designs would have dramatically elevated the city’s already impressive skyline to a new level. Today we present what the skyline would have looked like if all of these developments were built.

Philadelphia YIMBY Presents Massing Renderings of the 1987 Skyline

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

The iconic Philadelphia skyline has dramatically expanded since the completion of One Liberty Place in 1987. Philly YIMBY presents exclusive massing renderings of the 1987 skyline, reflecting the beginning of a period that saw rapid development in Center City.

Waldorf Astoria looking northwest. Image via Cope-Linder Architects

Looking at the Waldorf Astoria Hotel & Residences Once Proposed at 1441 Chestnut Street in Center City

8:00 am on March 3, 2021 By Thomas Koloski

Today’s entry in Philly YIMBY’s ongoing “unbuilt” series is the Waldorf Astoria Hotel & Residences Philadelphia, proposed at 1441 Chestnut Street in Center City, where the W/Element Hotel is now nearing completion. The 567-foot-tall, 59-story tower would have occupied the south side of the site of the former One Meridian Plaza, a 492-foot-tall office skyscraper damaged by a lethal fire in 1991 and demolished in 1999 (yesterday YIMBY covered a supertall structure proposed earlier at the site). Like the W/Element Hotel, the Waldorf Astoria iteration was also designed by Cope-Linder Architects, though the developers at the time were Mariner Commercial Properties, Inc. and Gatehouse Capital Corporation. The tower would have featured 181 hotel rooms and 126 residences.

Center City Tower rendering with Liberty Place. Image via Kling Lindquist

A Look Back at Center City Tower, Once Planned as the City’s First Supertall Skyscraper

8:00 am on March 2, 2021 By Thomas Koloski

In the late 1990’s, a massive supertall was planned at the site of the 492-foot-tall One Meridian Plaza, an office skyscraper damaged by a fatal fire in 1991 and demolished in 1999. The proposed Center City Tower at 1414 South Penn Square in Center City would have been built where The Residences at The Ritz-Carlton and the under-construction W/Element Hotel currently stand. Designed by Kling Lindquist, the 1,050-foot tower would have become the first supertall skyscraper in Philadelphia, rather than the Comcast Technology Center, which took the title 20 years later. Notably, Comcast was also considering taking office space at Center City Tower, and the cable company’s decision to pull out of the project and to build Comcast Center at 17th and Arch Street instead was a major reason behind the supertall’s cancellation.

World Trade Square aka Renaissance Plaza. Credit: Alesker & Dundon Architects

Visualizing World Trade Square, an Unbuilt Multi-Tower Complex in Northern Liberties, North Philadelphia

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

Yesterday Philly YIMBY published a feature story covering the 1,050-foot-tall Philadelphia World Trade Center supertall planned at 456 North Christopher Columbus Boulevard on the Delaware River waterfront in Northern Liberties in 1988. After the proposal fell through, developer Carl Marks Real Estate Group contracted Alesker & Dundon Architects to redesign the project as four shorter yet still impressive skyscrapers, which were to take up most of the 5.5-acre site. The development would now be known as World Trade Square, and later as Renaissance Plaza.

Philadelphia World Trade Center looking northeast. Model by Thomas Koloski

Revisiting the Unbuilt Philadelphia World Trade Center Supertall Proposal

8:00 am on February 27, 2021 By Thomas Koloski

In 1988, plans were revealed for a 1,050-foot-tall, 65-story Philadelphia World Trade Center supertall at 456 North Christopher Columbus Boulevard on the Northern Liberties waterfront. The tower would have stood just to the north of the Benjamin Franklin Bridge, located close to the boundary between North Philadelphia and Center City. The plan, which later evolved to the World Trade Square project, consisted of three shorter high-rises alongside the main tower. The skyscraper was designed by Kling Lindquist, which was also bend the Bell Atlantic Tower and the unbuilt Center City Tower. Carl Marks Real Estate Team, along with Lance Silver and Stuart Harting, were the developers.

12+Sansom at 123-27 South 12th Street. Rendering credit: Studios Architecture

New Massing for 12 + Sansom at 123 South 12th Street in Market East, Center City

7:30 am on February 26, 2021 By Thomas Koloski

In a follow-up to the recent design update to the 12 + Sansom project at 123 South 12th Street, Philadelphia YIMBY shares with its readers exclusive, brand new massing models of the 265-fot-tall, 20-story building’s future presence on the skyline. Designed by Studios Architecture (with Bower Lewis Tower Architects as the architect of record) and developed by Greystar Real Estate Partners, the 412-unit residential building will significantly boost the density in the Market East section of Center City. The tower’s shape and exterior have completely changed since the last iteration.

Bridgeman's View Tower. Rendering via Studio Agoos Lovera

Looking Back at Bridgeman’s View Tower, an Unbuilt 915-Foot-Tall Skyscraper Once Proposed in Northern Liberties, North Philadelphia

7:30 am on February 25, 2021 By Thomas Koloski

Over the course of the past three decades, many high-rise projects have been proposed along the Delaware River, yet most bit the dust before construction had ever begun. One of these is the 915-foot-tall, 66-story Bridgeman’s View Tower planned in 2007 at 900 North Delaware Avenue in Northern Liberties, North Philadelphia, a surprising location for such a tall skyscraper proposal, given the area’s then-lowrise profile. Designed by Studio Agoos Lovera and developed by Marc Stien, Ryan Roberts, and an undisclosed North Jersey real estate investment team, the tower was planned to feature a mix of residential office, hotel, and retail space, with 794 condominiums and 200 to 300 boutique hotel rooms.

Renderings Revealed for Ultra Labs University City at 100 North 32nd Street in University City, West Philadelphia

8:00 am on February 24, 2021 By Colin LeStourgeon

Renderings have been revealed for Ultra Labs University City, a mixed-use high-rise proposed at 100 North 32nd Street in University City, West Philadelphia. The building will stand 11 stories tall and hold 185,279 square feet of office and laboratory space, contributing to the city’s rapidly growing life sciences industry. The tower will likely rise somewhere between 160 and 190 feet tall, high enough to be easily noticeable from its position next to the rail yard and across from the Schuylkill River.

Timber Towers. Rendering via Hickok Cole

Examining Timber Towers, a Visionary Concept for Wood-Framed High-Rises Suggested for Center City

8:00 am on February 20, 2021 By Thomas Koloski

In 2018, architecture firm Hickok Cole published a design concept for Timber Towers, a trio of mixed-use high-rises that would use wood as the principal structural material. The concept, which won an honorable mention in the SKYHIVE Skyscraper Challenge, was designed to span an entire block in Center City to the northwest of the Comcast Technology Center. According to the architects, the 1.9-million-square-foot plan would use 2,075,125 cubic feet of wood products, “easily replenished by North American forests in less than three hours,” and sequester 80,775 US tons of carbon dioxide within the structure, resulting in emissions savings are the equivalent those produced by 12,073 cars within one year.

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