There’s no better way to get to know a place than by taking walks—store windows, homes, produce and flower shops, historical landmarks, imposing buildings, glimpses of day-to-day life, ethnic neighborhoods, beautiful views. It’s the only way to catch the wonderful smells and sounds that locals take for granted but that a visitor will remember long afterwards. Join your guest(s) or arrange for them to go on their own—either way, this gift will make for a delightful outing.