Places of interest around Lucerne/Glens Falls

I will be taking two gentlemen with disabilities camping at Moreau campground in late June. One is interested in history, so we will be visiting Saratoga National Battlefield. The other is interested in waterfalls. Both are capable of hiking a mile or so on a relatively easy trail.

I did some searches but would appreciate some ideas from locals about some accessible destinations. Anything along the line of interesting natural features, or cool places that you know.