Ripley states that Christopher Columbus was sent from the New World back to Spain in chains, which is true and happened after this third voyage, but goes on to state that Columbus "died in prison and was buried in chains." This is untrue. Columbus was eventually freed by the Spanish king and made a 4th voyage to the New World, returned to Spain, and died in 1506, but not in prison as Ripley claimed.
Robert L. Ripley introduces footage which he describes as depicting the Mosque of Omar in Jerusalem, but the footage (and Ripley's historical description) is actually of the Dome of the Rock.