A walker by nature, I couldn't help but notice the vibrant doors that marked each entrance in my new Southern neighborhood and the arching greenery that expanded above the sidewalks, creating a tunnel as I walked along.  In ancient Roman religion and mythology, Janus is the god of beginnings and transitions, hence, also of gates, doors, doorways, endings and time. He is usually a two-faced god who looks to the future and to the past.