Dr. Sun Yat Sen garden is a peaceful and beautiful green space in Chinatown. Check it out if you are in the area, there is a free portion that is perfect enough for a peaceful contemplative stroll.
"Step into our door and out of your daily life. As your heart and mind relax, energy renews. Journey back in time to 15th Century China and enjoy this "window to another world"
http://www.vancouverchinesegarden.com/