I walk 45 minutes to and from work each day along a beautiful tree lined street. It is a great way to start the day and then to transition back into home life, sort of a metaphorical journey to leave my work problems at work.
My walk is around 20 minutes and the time spent organizing my thoughts for the workday on the way in or winding my brain down from work mode on the way is a great benefit.
Every so often my wife will pick me up directly from work and the conversation is usually terrible because my brain is still thinking of the problems I was solving a couple minutes beforehand.