Factual error: The movie is set in the 1860s. During a performance for English guests, Anna has the King's children perform "Bicycle Built For Two". That song, otherwise known as "Daisy Belle" was written by Harry Dacre in 1892. (00:57:50)
Factual error: All members of the European orchestra at the banquet look as if they have their own, real-life haircuts, rather than appropriate for the period. (01:03:00)
Factual error: When speaking to the King of Siam or to the Royal Family, one speaks a special form of Thai called "Royal Thai." A person will never use everyday Thai to speak to the King as depicted in the film.
Factual error: The real King Mongkut was not tall as depicted in the film.
Factual error: The prime minister follows the king, Anna and Louis into his 'harem'. This would have been totally against palace rules as the only man allowed into the Inner Court is the king.
Factual error: While it is true that there is a temple next to the Grand Palace, no monks have ever lived in it.
