Frederick is a popular jumping-off point for outdoor activities for families, including the C & O Canal that runs next to the Potomac River to the west (Point of Rocks and the Monocacy Aqueduct are great places to explore the river and canal) and hiking in Cunningham Falls State Park to the north. Adventure Park USA is located just off I-70 to the east. The Clarion Inn Frederick Event Center is convenient for all these activities, and it has an indoor pool, an indoor play area, and a restaurant with a kid-friendly buffet.