The Comcast Technology Center is a building under construction in Philadelphia.The 60-floor building, with a height of 1121ft, will be the ninth-tallest building in the Western Hemisphere (the eight taller ones are all in the United States), and the tallest building in the Western Hemisphere outside of Manhattan and Chicago (and therefore the tallest building in Philadelphia). It is adjacent to the Comcast Center, the headquarters of Comcast Corporation.Construction began in summer 2014 and is expected to be completed in 2018.Design and constructionThe architect is Lord Norman Foster, with interior design by Gensler. The L.F. Driscoll Company is the construction contractor. Approximately 1.7 million rentable square feet, including 1.33 million rentable square feet of office space, 230,112 square feet of hotel space, and 2,682 rentable square feet of retail space will be created when the tower is completed.UseThe view from the top will be more than 40mi in clear weather.The building will consist primarily of office space and the new Four Seasons Hotel Philadelphia, which was formerly nearby. It will also include television studios, a retail mall, a parking garage, and a top-floor restaurant. The entire project contains over 1500000sqft. The property will be co-owned by Comcast and Liberty Property Trust, and has an estimated cost of $1.5 billion.