Walks are a great form of free entertainment. You get some exercise. You get to look at interesting houses, buildings, people, and lawn art. If you walk with a companion, you get to have some good conversations. It can also benefit you in other ways. When I was trying to understand better my 35 millimeter camera I took a 30 minute walk every day where my goal was to take three pictures. I ended up understanding my camera and how to frame a picture, plus some of the pictures turned out great and ended up framed as Christmas presents.