Finger Lakes region, mystic seaport area, Chesapeake Bay Area. Someone mentioned St. Michaels, such a charming area. Cape may is amazing in off season, especially in the fall. Avalon is nice. Find a place between Harrisburg and state college and combine them. It’s a beautiful drive, and fit in penns cave, there are other caves out that way. Niagara Falls might be slightly over 4 hours, but worth it.