Webmake your reservation to visit cadillac mountain, a popular summer destination for visitors to acadia national park. Accessible by car, it is the highest point. Webcadillac mountain is a popular destination for visitors to acadia national park. Accessible by car, it is the highest point on the eastern seaboard of the u. s. , and. At 1,527 feet, it's the highest peak on the east coast. Reach the summit on a hike through the lush pine.