I.M. Pei designed this 60-floor tower, which is New England's tallest skyscraper. Its unusual rhomboid shape creates a variety of profiles, depending on your vantage point. From Boylston Street, the tower, which is covered in 10,344 pieces of tempered glass, appears one-dimensional. From other angles it appears as a gigantic mirror reflecting the sky and its neighbouring buildings, including Trinity Church.