One of my favorite places to visit in Boston is Mount Auburn Cemetary. It's full of life, history, peace, beauty, and nature at its best. It's the only place you'll find a little fox running around, an owl hiding in the trees, and lily of the valley hugging the hillside...all within a few minutes' walk of each other.
Stopping by and enjoying a long walk in this beautiful place is a must when in the Boston area. It's not accessible by the "T", but if you have a rental car you are in luck! If hearing about Mount Auburn is new-to-you-news, read a little about it here for a minute. You'll see why it's such a unique part of history.