There are state parks that I have been to and suggest you check them out. Some include hiking, or waterfalls, lighthouses and more.
Map
Gulf Hagas is referred to the little grand Canyon. With long trails, waterfalls and and its part of the Appilation trail.
Gulf Hagas
I grew up here in the summers. The beautiful light house connected to a state park that once was a fort during war time. Great for walking, exploring the beach at the back bay.
Fort Point State Park
This is such a beautiful lighthouse and coastal view. It has hiking around the state park and palces to picnic. Just down the road is Mowry Breach Preserve and the bridge to Canada. It is the most eastern spot in Maine.
West Quoddy Head Lighthouse
Home of Thunder hole, and Cadillac Mountain. So many hiking trails, bikings and horse trails. Spectacular views looking down on Bar Harbor.
Acadia National Park
This is another hiking area that looks down on Camden below. Mt battie is the mountain you go up. There is hiking, camping and picnic areas.
Camden Hills State Park
Hiking up Katahdin or camping. Baxter State park is one park I have yet to go to. Soon though. Breath taking views and peopl ewill make it to the top and that is the greatest accomplishment.
Baxter State Park
Such an amazing state park for picnics, launcing your boats, the views out over the ocean along with an old historical building you can view as well.
Two Lights State Park
Havent been there yet but it also looks just as beautiful
Mt. Blue State Park
Grat place to enjoy the sea breeze and hike. People enjoy a swim and when its low tide you can walk across to the island. There are picnic areas and other things to do.
Popham Beach State Park
Another park I need to visit but my son told me about this one tha the learned about in his Maine travel course. It also has waterfalls and hiking.
Grafton Notch State Park
Its a smaller State Park for picnics and games. walk along the rocky beach looking for sea glass and other sea treasures.
Moose Point State Park
They have hiking trails, museum, lighthouse at the top of the hill and places to have a picnic.
Owls Head State Park
Another park I have yet to get to, I believe it has hiking and camping. Great for family outings.
Peaks-Kenny State Park
State park for hiking, birdwatching and picnicing also a place I have yet to go.