This event is in the past.It took place on March 3, 2026 at hôtel de Mercy-Argenteau.










Exposition gratuite « Rêveries de pierres : Poésie et minéraux de Roger Caillois »
2nd Arr.
Philosopher Roger Caillois believed stones hold secret poetry. This free exhibition pairs his lyrical essays with dazzling mineral specimens in a restored 18th-century mansion.
Literary exhibition
Mineral specimens
Historic mansion
Free entry
Tips
💎"the stones are magnificent, perfect, and invite us to imagine"
👶"suitable for visiting with a child interested in minerals"
Exposition gratuite « Rêveries de pierres : Poésie et minéraux de Roger Caillois »
2nd Arr.










Philosopher Roger Caillois believed stones hold secret poetry. This free exhibition pairs his lyrical essays with dazzling mineral specimens in a restored 18th-century mansion.
Literary exhibition
Mineral specimens
Historic mansion
Free entry
Tips
💎"the stones are magnificent, perfect, and invite us to imagine"
👶"suitable for visiting with a child interested in minerals"
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