I just finished a book called Microadventures by Alastair Humphreys (highly recommended yet uncompensated link here). The premise of the book is that you don't need to have extensive planning, travel far or spend a lot of money to be able to connect with nature, you just need to go do it (most of Alastair's adventures involve an overnight in a bivvy sack). In Maine we are fortunate to have beautiful natural surroundings within reach throughout the state.
This morning, my wife and I visited Kenduskeag Stream Park, starting on Franklin Street and hiking to the platform just past I-95 to view the falls (here is a map**). The park looked amazing with its leaves starting to change and the bright sunlight.
** On the return trip, we made a slight detour to obtain provisions at Gosselin's bakery.