National Historic Landmark Buildings

Bush Holly Museum
Connecticut Agricultural Experiment Station
Harper's House
Henry Whitfield Museum
Hill-Stead Museum

John Hay Estate
John Jay Estate
Litchfield Country Courthouse
Lynhurst

The Mount Greenhouse

Mark Twain House
Robert Treat Paine House
Florence Griswold House
Springfield Armory

National Historic American Buildings

Hathaway House
Keeney Memorial Hall
McAuliffe Manor
US Coast Guard Chapel

Historic Projects
Non- Historic Projects
Recent Completions
National Historic Landmark Buildings
National Historic American Buildings
National Register of Historic Districts:
-Connecticut
National Register of Historic Places:
-Connecticut, Massachussetts, New York,
-West Virginia, New Hampshire
Awards