Santiago came to rank with Rome and Jerusalem as one of the great destinations of medieval pilgrimage. To find more of the history and legends surrounding the shrine, visit http://www.red2000.com/spain/santiago/history.html.
A fascinating virtual pilgrimage to the shrine, created by John Dagenais of UCLA, can be found at http://www.humnet.ucla.edu/santiago/iagohome.html.
At this website can be found various pictures from Canterbury, including the supposed original stained-glass window of Becket:http://www.digiserve.com/peter/becket.htm.
Here is a good map of the pilgrimage. http://www.digiserve.com/peter/pilgrim/pilgrim-map1.htm.