In 1961, handbills announcing a 1963 opening of the Haunted Mansion were given out at Disneyland's main entrance. Construction began a year later, and the exterior was completed in 1963. The attraction was previewed in a 1965 episode of "Walt Disney's Wonderful World of Color", but the attraction itself did not open until 1969. The six-year delay owed heavily to Disney's involvement in the New York World's Fair in 1964–1965 and to an attraction redesign after Walt's death in 1966.