For those that don't know the curvature of the earth: For an observer standing on a hill or tower of 100 metres (330 ft) in height, the horizon is at a distance of 36 kilometres (22 mi)
You might notice that the shoreline is not visible, and the bottoms of the buildings are chopped off. For instance the Chase Tower in this photo is 850 feet tall and the bottom 1/3 is not visible.