Robin Hood: Prince of Thieves (1991)
Curiosities: hideout of Robin Hood and his Merry Men
Which of these forests (from live-action films) is the most interesting place?
Thanks to Djesika, buddhalou, dandelion24, alioth4, and Dibyayan_Chakravorty for some of the suggestions
Curiosities: hideout of Robin Hood and his Merry Men
Curiosities: living ''trees'' called Ents and Huorns
Curiosities: The Blair Witch (maybe)
Curiosities: camouflaging stones and nature-protecting Invisible People tribe
Curiosities: flame spurts, lightning sand, and rodents of unusual size
Curiosities: lots of dancing ghosts
Curiosities: Gaulish druids showing off their magic
Curiosities: centaurs, hippogriffs, acromantulas, and other magical beings
Curiosities: Kandarian demon who posesses trees and people
Curiosities: it is protected by a shapeshifting Chuck Norris (no, really)
Curiosities: entrance to Narnia and a home to fauns and talking beavers
Curiosities: trolls
Curiosities: living plants and giant trees
Curiosities: Elves and their treehouses
Curiosities: red-eyed birds and telekinetic forces
Curiosities: Ewoks and their treehouses
Curiosities: Wood Elves, Great Spiders and an enchanted stream
Curiosities: here be monsters (stay out!)
Curiosities: trees are an interesting and important part of the battlefield
Curiosities: magical love-flower and fairies
Curiosities: ghosts of the people who commited suicide
Curiosities: many elements from the Grimm Brothers' fairy tales
Curiosities: whatever a child's imagination can think of