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.
It is bordered by New Hampshire and Vermont on the north, New York on the west and Connecticut and Rhode Island on the south. Depending on the region, Massachusetts real estate varies from seashell-covered beaches on the east coast to rural areas with thick wooded forests to mountainous terrain in the west.