If you like adventurous, sketchy, and watch your every step climbing you'll love The Ledges. These moderate trad lines were once stomping grounds for Layton Kor in the early '60s. The rock here is very solid as a macro structure, but they can seem rather loose the whole way. Watch your belay stations as each ledge has a lot of loose scree and talus. Note: there are overhanging bulges to belay under; to protect from rock fall.
Go west on US 34 to the Narrows of the Big Thompson. Park at the pull off for the Practice Wall, and the guard rail trad line (US Highway 34 bypass). Continue east jumping the rail and scrambling down a horizontal ramp to the base of the ledges just infront of the river bend. Pick a line. The approach is only 5 minutes from the car, but the descent is a bit tricky, I wouldn't rap off, due to a lot of loose rock and possibly a stuck rope. Head west at the top of the canyon to find a west decent gully, you might have one rappel if you're lucky.