OAK HILL, High above renown Dublin Lake, the focal point for the substantial summer homes of the illustrious members of an art colony at the turn of the last century, is this architectural mid-century masterpiece.  Accessed by a long winding, paved drive to a high knoll on the north ridge of Mount Monadnock, the site offers absolute privacy and spectacular westerly views to mountains of New Hampshire and Vermont.  Its 94 acres abuts the over 5,000 protected acres of the Grand Monadnock Reserve. One of the premier hiking trails, can be accessed directly from the property.  Featuring natural high-quality materials, including pecky cypress and native stone, it was designed by Architect James Hillary M.A.I. and built by Dartmouth Egyptologist, Ray Winfield Smith, to house his collection of antiquities.  The current owners have enlarged and enhanced his vision.  Five bedrooms and seven baths on multiple levels are serviced by an elevator, including a deluxe master suite on the top level.  The lowest level has a glass enclosed pool with a retractable roof.  A tennis court is another recreational amenity. Many patios and decks on each level allow extensive opportunities for outdoor living, appreciating the matchless views.  A triumphant culmination of one of a kind location and fascinating design, offering an exciting lifestyle without equal.