The John Hancock Tower in Boston, Massachusetts. This is the tallest building in the city. When it was first constructed, the surrounding area was quite dangerous since the windows would detach and hurtle down upon the sidewalk below. When the winds reached 45 mph, the police would block off the area to prevent disasters. Fortunately for the residents, the problem has been solved. The building to the right is the Boston Public Library. This is the main branch and headquarters for the city’s 25 branches.