St. Mary’s County sits on a peninsula bounded by the Patuxent River, the Potomac River, and the Chesapeake Bay — roughly 536 miles of combined shoreline. Bald eagles are here year-round, osprey arrive every March and stick around through October, and great blue heron rookeries and diamondback terrapins share the tidal marshes. It’s not just scenery, either: researchers call it “blue space,” and the evidence keeps growing that time spent near water is linked to lower stress and anxiety, improved mood, slower heart rate, and even lower rates of depression among people who live close to the coast. Living surrounded by the Bay, the Potomac, and the Patuxent is a documented, daily dose of calm that’s hard to find anywhere else within
reach of D.C.