Alan Hale appears as Little John in this film and he reprised the role 16 years later in The Adventures of Robin Hood (1938) opposite Errol Flynn, and again in Rogues of Sherwood Forest (1950), which was released 28 years after his original performance, making this one of the longest periods for any actor to appear in the same major role in film history.
The castle is reputed to be the largest Hollywood set built for any silent movie. Lloyd Wright, Frank Lloyd Wright's son, designed at least one set which he later remodeled as a temporary band shell for the Hollywood Bowl.
This movie has the distinction of being the first to have a gala premiere. Theater owner Sid Grauman conceived the idea. The premiere was held at Grauman's brand-new Egyptian Theater in Hollywood.
The Los Angeles Angels were used as extras to play Robin Hood's Merry Men in the film.
The 2008 book "Douglas Fairbanks" by Jeffrey Vance (page 151) debunks the myth that this was somehow "lost" for decades. It was never lost. In fact, the Museum of Modern Art has made it available through its Circulating Film Library (non-theatrical/educational distribution) since 1938.