Nedelkou Mansion is located in the heart of the city. It was built in 1909 by architect Xenophon Paionidis as the doctor’s Ioannis Nedelkou family residence. At the same time the mansion was used as the doctor’s private infirmary and clinic and later his son’s, Konstantinos Nedelkou, a distinguished surgeon. Since 2004 it houses the activities of Mount Athos Center, a non-profit organization of the Municipality of Thessaloniki and the Mount Athos Holy Community with the aim of study, research and promotion of Mount Athos