THE GIANTS OF THESSALY is one of the better PEPLUM films made during the PEPLUM/Musclemen/Sword & Sandal explosion of the the late 50s/early 60s. The assured hand of Riccardo Freda keeps it going even if there are some weak spots in it, the weak aspects being the acting (there's a scene with an actress tied to a rock and her acting is pitiful) and some cheesy sets and effects. But the bad aspect of this film do not diminish the entire overall effect and it's pretty cool. British actor Roland Carey makes a nice change over the usual Steve Reeves or Mark Forest or Gordon Scott. Physically, Roland is imposing. He looks tall and built but not too built like a body builder. His physique is believable. Roland plays Jason and the story is basically the quest for the Golden Fleece (part of this story was already incorporated in HERCULES(1958) ).
He leads a boat filled a beefy crew and they got through a bunch of great and not so great adventures, culminating with the finding of the Golden Fleece. The scene when Roland Carey gets the fleece is one of the greatest moments ever made in a PEPLUM. From the boat, to climbing up a cliff that leads to the statue where Jason as to climb all the way to the top of the statue to retrieve the fleece is simply amazing. Combined with the rousing score (one of the best and most familiar scores in any Sword & Sandal) and you have a brilliant scene. It makes the movie and Riccardo Freda's direction really shines here.
The DVD available in the US is of terrible quality. I've seen a clear fully widescreen HD version and it's amazing. The US DVD doesn't do it justice.
And to those who think this is nothing more than a weak rip-off of the Ray Harryhausen version of Jason & the Argonauts, well THE GIANTS OF THESSALY was made 3 years before the Harryhausen flick.