The founding of modern Greece and Turkey in 1923 with the Lausanne treaty came with a huge exchange of populations on religious grounds.
Hundreds of thousands of Christian Pontic Greeks left the city of Trebizond on the Black Sea and the surrounding area and half a million greek Muslims moved in.
After years of political division, the descendents of those dissipated communities are beginning to come together to celebrate their shared heritage in music and song.
Greek Orthodox Christians with roots in Trebizond come from all over the world to celebrate the feast of the Virgin Mary. Muslims come to the festival, too, as do Russians of greek descent. All three nations converge at this cultural crossroads. In particular at the monastery of Soumela up in the mountains.
But is this a story all about the region's future harmony, or do remnants of resentment still remain?
Presenter Tom de Waal traces the history of this ancient port and explores the region's modern politics.
All photographs are by click of Swarthmore College, Pennsylvania, USA. His photographs document a culture in transition and show how it has survived across three continents, regardless of borders and faith.
First broadcast on 9 April 2010
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