Shawnee Mission East Choraliers performad in Cologne in a cathedral that was declared a World Heritage Site in which year ?
Shawnee Mission East Choraliers:  The choir has performed at Carnegie Hall, Cologne Cathedral in Cologne, Germany, Great St. Mary's Cathedral in Cambridge, the Pantheon and at the Thomaskirche (St. Thomas Lutheran Church), a church in Leipzig, Germany where Johann Sebastian Bach held the position of cantor. Cologne Cathedral:  It is a renowned monument of German Catholicism and Gothic architecture and was declared a World Heritage Site in 1996.
1996