The Rayward–Shepherd House, or Tirranna, is a New Canaan, Connecticut, home designed by Frank Lloyd Wright and built in 1955 as one of his late residential works. Set on fifteen acres beside a pond near the Noroton River, it was closely integrated with water, gardens, and the surrounding landscape. Its semicircular design used concrete block, timber, glass, Colorundum flooring, and Philippine mahogany trim, while the grounds were shaped in part by Frank Okamura and Charles Middeleer. Later additions included an observatory, playhouse, expanded living spaces, and a tree house by Taliesin Associated Architects, securing the property’s architectural importance in New Canaan.