Guess the French region with the help of this clue: out on loan with reference to Diana

In which of France's 13 regions was this photo taken?

This palace library is named after the Roman goddess of the hunt

This grand library measuring 80 metres long by 6 metres wide is located in a French palace, and is named after the Roman goddess of the hunt.

The library was used by those who lived and worked there and its lending practices paved the way for French public libraries.

Can you guess where it is located?

Click to show answer
A) The Gallery of Diana at Fontainebleau castle (Seine-et-Marne) in the region of Île-de-France
The exterior of the French palace where this library is located