Why is it so satisfying to walk up and down stairs? Maybe it's the new layer of discovery with each step - a new far-off view and a new close-up look at the plants and buildings. Maybe it's the fleeting proximity one has to passing strangers. Maybe it's the great feeling of propelling yourself upward and then floating downward. Maybe it's the best workout you can get without putting on gym clothes. Whatever the reason, stairs are an excellent way to get yourself up or down a landscape, and Portland, Oregon has a whole lot of them built into our public sidewalk and trail infrastructures.