"The queen and the king visit Duo in his palace in France."
Translation:Die Königin und der König besuchen Duo in seinem Schloss in Frankreich.
The English sentence uses "palace." Wouldn't Palast be a better translation than Schloss? I think of castles as historic buildings. A palace could be old or new; it just has to be grand. In other words, they're not the same thing.
Technically, that is correct. However, the Oxford entry for castle does give a list of synonyms, one of them being palace. While not technically accurate, generally speaking, it works, so...