A former co-worker of mine lived in DC - near the U Street Corridor - and he would commute to work by bike almost every day. Since his commute was so short, he would leave his apartment early and ride around and explore the city so he could get in extra mileage. He would do the same thing after work - riding through every quadrant. Our secretary, who lives in SE DC, would tease him and tell him that he was going to get in trouble. No one ever bothered him and he often met really nice people who were curious about what the heck he was doing in their neighborhood.