OPEN HOUSE, Sunday, August 10th,10am to noon. Atop the gentle hill at the intersection of the best roads in Arrowsic, a picture-book antique Cape has witnessed history in three centuries. Asa Tarr built 742 Old Stage Road to last! Many of his design ideas still distinguish the snug farmhouse he erected himself in 1860: Greek Revival architectural elements and woodwork combine with cleverly engineered windows and nicely proportioned rooms to make for a charming house as comfortable today as Asa intended it then. Original wide-plank pumpkin pine floors glow in the sunshine that streams through the abundant south-facing windows; other windows frame lovely views of ancient apple trees, as well as views across the shore land to a kayak-friendly creek that wends its way to the Back River. Three bedrooms, one bath; fireplace parlor with woodstove insert; dining room with china closet; spacious kitchen with pantry; library with nook; walk-up attic providing convenient, generous storage; partially finished walk-out basement with workshop area. Detached two-car garage close to street; smaller, recent post and beam barn; gazebo; wood house; rehab-able screen cabin. 1,685 sq ft on 19+ acres that encompass woods, marsh, and meadow. One-floor-living ready; expansion potential. Scant minutes from Bath and Route 1 in one direction, from Georgetown (Robin Hood Marina, Reid State Park, Five Islands Lobster Company) in the other, in a private yet not at all isolated location. Enjoy the real MidCoast Maine on Arrowsic Island, at once close in and a world away -