There are lots of fun things to do in the area. I’ve listed below a few suggestions/ideas.
Acadia National Park
Swimming, beaching, hiking, walking, site-seeing. Visit the Park Information Centers to get all the details and locations. The sunrise on top of Cadillac Mountain is especially nice, as it’s the first place it can be seen in the U.S., as well as Schoodic Point, northwest of Hancock off Rt. 1
Carriage Road Walks
There are many carriage roads all over the Island, built during the Depression and earlier. Many are in Acadia National Park, but some can be found off of the main highways. You can access a few carriage roads in Northeast Harbor and Seal Harbor, including Little Long Pond and Day Mountain, in Seal Harbor.
Mountains trails that can be accessed outside of the Park include: Door Mountain, Day Mountain, Eagle’s Craig, St. Sauvier.
Maine Coastal Islands National Wildlife Refuge (formerly Petit Manan Wildlife Refuge)
A 1900 acre wildlife refuge with walking trails northeast of Hancock. http://www.fws.gov/northeast/mainecoastal/
Great swimming lakes include Echo Lake, Long Pond, Beech Hill Pond.
Asticou and Azalea Gardens in Northeast Harbor are beautiful, as well as Sieur De Mont Springs in Bar Harbor.
Sand Beach in Acadia National Park and Seal Harbor Beach in Seal Harbor; the State Park beach in Lamoine. Also, Echo Lake Beach, Mount Desert.
Kebo Valley Golf (Bar Harbor); Northeast Harbor Golf; Causeway Golf Club (Southwest Harbor); Bar Harbor Golf Course (Trenton, off Island); White Birches (Rt. 1, Ellsworth)
Northeast Harbor municipal courts (near the town pier); Bar Harbor municipal courts; Ellsworth Tennis Center; Hancock Point tennis (you must pay around $25 to become a member)
There are several bicycle rental shops in the commercial district of Bar Harbor. Mountain biking is great at Eagle Lake, and other spots in Acadia (see Rentals page of this website)
Eagle Lake; Echo Lake; Long Pond; and in Bar Harbor! Canoe rentals are available at the lakes, and through Scotty's Kayak and Canoe Rentals (he delivers to, and picks up from, your rental cottage). There are also sea kayaking tours in Bar Harbor and Hancock.
Acadia Reparatory Theater in Somesville
Dinner theater at the Deck House restaurant in Southwest Harbor.
Whale Watch boat trips
Deep Sea Fishing
Ferry to Great Cranberry Island (Northeast Harbor)
Horseback riding in Hancock (doublelstable.com)
Tea and Popovers at the historical Jordan Pond House (trivia note: my great great Aunt Maude worked there in the late 1800s!)