On our way back from Canada, we spent the weekend catching up with family in Maine and visited the Penobscot Narrows Bridge and Observatory, the first bridge observation tower in the United States and the tallest public bridge observatory in the world. The tower reaches 420 feet (128 m) into the air and allows visitors to view the bridge, the nearby Fort Knox State Historic Site and the Penobscot River and Bay. We also drove through The Forks, Maine which has a population of 30.