Spectacular views of the chateau, Seine River, and village on the way up. There's not much shade, but if you're not afraid of the sun and heat, it's a great spot for a picnic either before or after visiting the chateau.
The entrance fee isn't expensive, but if you're feeling extra frugal, it is possible to walk around the chateau via trails running along the exterior. Considering that it's free, you do get to see a fair bit up close. If you're willing to pay, you get to see a bit more. However, realize that it is a pretty small site so unless you want to sit in the shade of the windows to take in the views for a while (recommended, we got a really cool and refreshing breeze), it will still probably be a short visit... We came here after spending the morning in Giverny at Monet's gardens and didn't feel rushed. If not for the fact that we had to file a police report (see last paragraph), it would have been a very leisurely day for us, even with having to drive back to Paris that night.
The English brochure isn't terribly helpful or engaging; it read like a bulletpoint list, so I suggest reading up beforehand or consulting Google if you have cellular data.
I do NOT suggest parking in the smaller, closer lot. It's sheltered by trees and feels more secluded. Perhaps that is why someone felt safe to break our car window to steal our stuff, even though we kept our things hidden in the trunk. The burglar seemed a bit more sophisticated; it was a smash-and-grab, but they broke through the small window that some cars have before the front passenger window so that it was less obvious, and bent the frame there to gain access. They also only took our electronics. Ours appears to have been the only car broken into, as I didn't see shattered glass anywhere else. This marred our experience quite a bit. We were lucky that someone else came by so we could borrow their cellphone (ours didn't work because we were visiting from a foreign country) to call the police. We could probably have backtracked to the chateau entrance, too, but the place is small enough that if this happened after-hours (e.g., we went around the outside of the chateau after it closed before coming back to the parking lo), I would bet that the employees would have left and we'd be out of luck. read more