Pop on those comfy shoes. Locals and tourists alike can learn much about a place by pounding the pavement. Free walking tours offer an up-close — and thrifty — way to experience a new city and sometimes even create a new perspective on a town you’ve long called home. We’ve taken a cross-country trek of sorts, spotlighting a variety of free tours across America that touch on history, architecture, music, sports, recreation and more. Bring a camera and remember, although no payment is required, tips are always appreciated.