Pittsburgh, the Three Rivers Confluence, is the second largest city in Pennsylvania after Philadelphia. In point state park, I met the late fall of the United States. This downtown park has the largest fountain in Pittsburgh, the fountain is opposite the intersection of the three rivers, the big lawn is the three river art festival, and the July 4th festival puts fireworks, the place where the concert is open, sitting in the Three Rivers At the intersection, you can see the red sunset on the other side, which is beautiful. Pittsburgh was once a famous steel industrial city in the United States, and is known as the "world steel capital." Quiet like Pittsburgh, there is always a lake that can quietly bask in the sun. The sun is like Pittsburgh, surrounded by students full of dreams. Pittsburgh is a small city that is very suitable for living. On the Mount Washington opposite the park, the view is very good, and the maple leaves are good in autumn.