Casco Bay Island Compound
Medieval Castle in the Midwest
Gaudy Gilded-Age Mansion
Location: South Portland, Maine
Set so close to the ocean that the edge of the swimming pool seems to empty onto the beach, this '50s construction in southern Maine might seem like quite a deal, but considering what erosion could do to this seafront spread, some engineers reports may be in order. Priced at $1,600,000, the house boasts stunning water views from broad single-pane windows, that precarious pool, four bedrooms, and an interest in nearby conservation land. Then again, a couple decades of nasty nor'easters might leave the next owner pitching a tent on that conservation land.