How about The Red House in Franklin? http://www.ourredhouse.com/weddings
St. Augustine's Chapel, Benton Chapel (where my husband and I got married!), and Scarrit-Bennett (Wightman and Skinner Chapels) are all on Vanderbilt's campus as is the University Club of Nashville where you can have an awesome reception (where my husband and I had ours).
Click on each tool to see a sample.