The Château de Grésillon (Esperanto: Kastelo Greziljono) is situated 250 km to the southwest of Paris in Baugé between Angers, Le Mans and Tours in France.^[1]

This article relies largely or entirely on a single source. (November 2012)

You can help expand this article with text translated from the corresponding article in Esperanto. (March 2013) Click [show] for important translation instructions. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing Esperanto Wikipedia article at [[:eo:Kastelo Greziljono]]; see its history for attribution. You may also add the template {{Translated|eo|Kastelo Greziljono}} to the talk page. For more guidance, see Wikipedia:Translation.

The nonprofit organization "Cultural House of French Esperanto Speakers," established in 1951, owns the château with an 18 hectare park (about 0.2 square kilometers). It is frequently visited by students of Esperanto from all around the world, especially in summer.

Wikimedia Commons has media related to Château de Grésillon.

• Greziljono Facebook group
• Official website (Esperanto, French and German versions)