Calvert Cliffs State Park
This park is awesome! I have been going here for years. The park has a great play ground right off the main parking lot for kids to play on as well as a few bathrooms. Also right off the parking lot is a little fishing pond which leads you to the main trail to get down to the beach which is about a mile - a mile and 1/2. The trial is marked very clearly through the woods, across some bridges, and next to a marsh. Finally the beach is very beautiful even though every year it gets smaller and smaller. The park staff are very friendly, and are very informative on the many fossils you may find on your visit down there. All in all its a great day trip.