1818 Market Street

1818 Market Street is a 40-story skyscraper in downtown Philadelphia, Pennsylvania, United States. The building was designed by the firm Ewing Cole Cherry Brott . It was the tallest building erected in Philadelphia between the completion of City Hall in 1901 and the completion of One Liberty Place in 1987, during the period of the "gentlemen's agreement", the observation of an unofficial height restriction of the top of the hat of the statue of William Penn atop City Hall that stood for 86 years. The building is the eleventh-tallest in Philadelphia.
The building contains over 981,000 square feet of office space over 37 floors with six levels of parking. Its major tenants include ABN Amro, the American College of Radiology, WSFS Bank, Booz Allen Hamilton, eResearch Technology, Five Below, Merrill Lynch, Mitchell & Titus, Metrocorp, Northwestern Mutual, Swiss Re, and STV Incorporated.

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