As skyscrapers are built, they are open to the elements. On the morning after a snowfall, the 63rd floor, as an example, will be covered in a layer of snow and deep drifts from the wind. My favorite thing to see is the many, many paths made from the footprints of the current animal inhabitants of the unfinished building: rats, pigeons, maybe other birds? One time it was clear from the varying size of the tracks that a big mama rat had taken her young ones on a stroll.

As skyscrapers are built, they are open to the elements. On the morning after a snowfall, the 63rd floor, as an example, will be covered in a layer of snow and deep drifts from the wind. My favorite thing to see is the many, many paths made from the footprints of the current animal inhabitants of the unfinished building: rats, pigeons, maybe other birds? One time it was clear from the varying size of the tracks that a big mama rat had taken her young ones on a stroll.

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