As part of the York 800 celebrations, the York Mystery Plays will be streamed live on the Internet during the weekend of August 11 and 12. (Yes, it's the last weekend of Pennsic.) The plays will be set in the Museum Gardens with the ruins of St. Mary's Abbey as their backdrop. They were last performed in 1988.
York 800 celebrates 800 years since the granting of the city charter, and celebrations continue throughout 2012.