Avalon

'The Last Sleep of Arthur in Avalon' by Edward Burne Jones

George Henry & E.A Hornel
The Druids – Bringing in the Mistletoe, 1890

King Arthur Rides to Seek the Grail', Otranto Cathedral pavement mosaic - Otranto Cathedral, Puglia, Italy, 1136.

http://books.google.com/books?id=XSnDq54aqwoC&printsec=frontcover#v=onepage&q&f=false