Vitamin D -- specifically the form D3 -- is the only vitamin your body makes itself. It's fat-soluble, which means your body stores vitamin D in its adipose tissue -- in its fat. And, if you want to be specific about things, this vitamin is actually a hormone.
Sullivan's Castle Island, South Boston, MA, Est. 1951. Castle Island. Located at the end of Carson Beach, on Pleasure Bay in South Boston, Castle Island is a 22-acre recreation site, and the site of Fort Independence. Castle Island was really an island until several land reclamations through the years extended causeways and eventually roadways.
Castle Island, South Boston. Castle Island is a great place to spend an afternoon. It's located at City Point in South Boston, and can be reached via public transportation. It's a nearby destination to escape the bustle of the city, and to obtain great views of Boston Harbor and Logan Airport.