There is no fee. Very beautiful area..As one lady said above a be prepared for summer Thunderstorms. Go see Buffalo Bill's grave and all that stuff. Have fun.
It's free to visit the mountain and they have a gift shop and snack bar. The view is amazing and you can see the Coors factory! When I visited we went from the mountain down to Golden and visited the town and Coors. Makes for a perfect day.
I went there in March and there was no admission fee. As far as what to wear, I would say just casual walking outfit, jeans/shorts, t shirt, sneakers. I would check weather beforehand.
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