Three Logan Square
6th tallest finished building in Philadelphia

Three Logan Square is an office building in 1717 Arch Street, Philadelphia, with 55 floors, finished in 1991. It stands 225.3 m (739 ft) tall, which makes it the 6th tallest finished building in Philadelphia.
- Height
- 225.3 m · 739 ft
- Rank in Philadelphia
- 6th of 25 listed
- Floors
- 55
- Completed
- 1991
- Use
- Office
- Address
- 1717 Arch Street
- City
- Philadelphia, USA
Next to it in the ranking
4th · Two Liberty Place258.5 m · 848 ft · 1990
5th · BNY Mellon Center241.4 m · 792 ft · 1990
7th · FMC Tower at Cira Centre South222.5 m · 730 ft · 2017
8th · G. Fred DiBona Jr. Building190.5 m · 625 ft · 1990
See all of Philadelphia's tallest buildings
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Heights, floors and years for finished buildings follow published figures, cross-checked with Wikipedia's list of tallest buildings in Philadelphia. Last checked 2 Nov 2026.