Lobster, lobster, lobster. Sorry if you have an allergy.
You MUST visit the Holy Donut. There will be a line and they do close for the day when they sell out. These donuts are made from scratch and include Maine potatoes. They have vegan and gluten free too!
Hubs and I were looking for a little seclusion, and what is better than a private island? The Inn at Diamond Cove. This island was once the site of Fort McKinley and provides a peaceful escape. Leave your car in Portland (they don't allow cars on the island) and take the Casco Bay ferry to Diamond Cove.
*Travel Tip: Make a reservation at The Diamond's Edge Restaurant. It is the only restaurant on the island outside of the hotel offerings and it is very popular with island residence. The food is delicious!