One of the best ways to discover America is on foot, one sidewalk at a time.

Think about it. You walk out the door, and there are you are, crossing paths with God knows who, from neighbors you've known for years to total strangers you never would have lain eyes on if you hadn't put shoes to pavement.

And you never know what conversations will erupt from running into a fellow human being. In the time it takes a dog to squat, you can chat about the price of gas and the cost of sum ...

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