Highly recommended.

Highly recommended.
Really a real surprise in Paris.
A spectacular mineral collection, unique in the world, mineral stones from around the world, presented and explained in detail.
If you like minerals forget about everything else, you have to come to this hidden place in Paris. Also within the Luxembourg Garden
I think much better (and cheaper) than the gallery of mineralogy and geology that is in the Garden of Plants, but the latter does not visit it, and I do not regret my choice.