In medieval times some Christians thought of Jerusalem as the center of the world (Latin: umbilicus mundi, Greek: Omphalos), and was so represented in the so-called T and O maps. Byzantine hymns speak of the Cross being “planted in the center of the earth.”
Wikimedia Foundation (2013). History of the Center of the Universe. Available http://en.wikipedia.org/wiki/History_of_the_Center_of_the_Universe#Outside_of_astronomy. Last accessed 27th Mar 2015.