This page features Maryland family vacation ideas including family-friendly hotels, resort, and campgrounds with vacation offers. Best places for family vacation fun: Baltimore Zoo, National Aquarium, Catoctin Wildlife Preserve and Zoo, Assateague Island and National Seashore, Six Flags America in Mitchellville, Jolly Roger Amusement Park or Trimpers Amusement Park. Hike in Merkle Wildlife Sanctuary; visit Antietam or US Naval Academy Museum. Attend theatre or live music concerts. Go family camping, and fishing or try kite flying, and sand castle building.