The wood itself is open 24/7. For more information about the gardens, please visit the park's site at parisinfo.com.
Admission to the wood is free.
Jardin des serres d'Auteuil: free
Jardin d'Acclimatation: €3
Parc de Bagatelle: €8 (reduced €4)
Boat hire: €10 (for the first hour)
Wikipedia https://zh.wikipedia.org/wiki/布洛涅林苑
Official website http://www.paris.fr/jardins#bois-de-boulogne_19
More information http://en.parisinfo.com/paris-museum-monument/71494/Bois-de-Boulogne
地址 75016 Paris, France
坐标 48°51'48.934" N 2°15'2.089" E