A rare opportunity to own a piece of Hawaii's architectural legacy. Built between 1924-1927, the George de S. Canavarro House—also known as Canavarro Castle—is a Mediterranean Revival estate designed by noted architect Hart Wood and constructed by builder Kobayashi. Listed on the National Register of Historic Places, it is a rare example of early 20th-century Mediterranean design in the Islands. Located on the northwestern slopes of Nuuanu Valley in Pu‘unui, adjacent to the O‘ahu Country Club, the estate spans 7 acres—including 1 acre zoned residential and 6 acres of preservation land—with sweeping views of the valley and Honolulu Harbor. The 2-story, cross-shaped residence is centered around an open-air courtyard and terraces down the natural slope. Stuccoed masonry walls and a mission-tiled roof reflect the home's historic charm and solid craftsmanship. Currently configured as 8 rental units (3 studios, 3 one-bedrooms, and 2 two-bedrooms) with ample parking, the property provides immediate income potential and possible preservation-related tax incentives. This is a rare chance to invest in, restore, or simply enjoy one of Honolulu's most iconic and culturally significant homes.