A Beautiful Farmhouse Style B&B The Cornerstone Bed and Breakfast was built in 2006 on a 2 acre wooded parcel of land on Cooper Mountain in the quiet Washington County countryside. Yet it is only 10 minutes from one of Oregon's largest shopping malls, Washington Square. You will enjoy overlooking the valley below with vineyards, orchards and berry farms. Every room has it's own bathroom and a private entrance from the deck surrounding the house. Only 5 minutes to wine tasting at the famous Ponzi and Cooper Mountain wineries.