This historic covered bridge spans the Housatonic River and offers a wonderful river hike with waterfalls, rapids, overviews, a small gorge, and if, you're in decent shape, a picturesque overview high up looking back over the river.
Part of the trail system that encompasses the Appalachian Trail, Bull's Bridge is a great place whether you just want to stretch your legs for a few minutes or set out on a strenuous hike.