Goofs

Dario turns the wheel in the same direction to open and close the ramp that leads to the statue's cauldron.

One of the Rhodesian patriots has a leather bracelet around his arm in one scene, then the camera pans to another character, but when it pans back the bracelet on the patriot's arm is gone.

The film dates itself to 280 BC. In the scene where the two thugs try to kidnap Darios, in the background, a bust of Cicero, a Roman statesman can clearly be seen. Cicero was not born until 106 BC.

The molten lead used to discourage the attack on the statue is red and looks like tomato sauce. Real molten lead is silver in color.

In the film the Colossus of Rhodes is destroyed by a conveniently timed earthquake shortly after being completed. The real Colossus of Rhodes stood for over a half century before it was, like its cinematic counterpart, destroyed by an earthquake.

The cinematic Colossus has its arms stretched out and holding a vessel containing fire. The real Colossus had its right hand above its right eye in what historians believe is a salute.

The picture dates itself to 280 BCE. The island of Rhodes is shown as an independent state, which is true enough for the time; however, it's alleged to have a king although Rhodes was a republic at the time. The king bears an uncharacteristic non-Greek name: Serse, an Italian corruption of Xerxes, a Greek corruption of an Iranian name that it scarcely resembles. The king receives an ambassador from Phoenicia - at the time an integral part of the Seleukid Empire (Syria). Greece is referred to as if a united country, which at the time was untrue - divided as it was between Attika, Lakaidemon, the Akhaian League, the Aitolian League, Epiros, Makedon, and other states.

They build a huge statue despite the area being prone to terrible storms.