There's plenty to see along the BRP. With an abundance of gorgeous open-air views, trails, waterfalls, overlooks, wildflowers, and the unexpected, it is one of the most scenic drives in America, and you'll stay occupied: it winds through multiple states. It's perfect for those who, of course, love nature, and aren't easily bored by what at first seem to be repititious mountain landscapes. You have to look closer.
Plenty of guidebooks provide a list of attractions accessibly by the Parkway; Doughton Park, Crabtree Falls, and the Jeffress Trail are just three of them. I have so many photos from many days spent winding the curves of the Parkway that simply a random selection is all I can afford you. You should see it for yourself. :)