It would be even better if you can give one copy to someone you trust like a Friend, Family member or anyone to contact in need.
Better to email the necessary files to yourself.
If you find a lost passport, you are requested to return it the U.S. Department of State at this address.
1111 19th Street, NW, Suite 500
It would be highly recommended to buy a small backpack for yourself as we humans have a natural tendency to fill up the extra space too whether we need them or not.
On a personal level, wandering to a city purposefully is always good so try to get lost for some time using Google maps.