One of the places I've discovered I like walking here in Texas is the John Burke Nature Preserve. It's a bit of a detour from work, but not too far, and it's a very wooded and secluded area tucked almost under the onramps for the big interstate. You are never away from the roar of traffic, but that fades into the background as you tramp along the well-maintained trails. I rarely see another person when I visit, and that suits me.