In the narthex there is a series of frescoes.

Fresco with bishops and emperor in Ecumenical Council. Possibly an evocation of the First Council of Nicaea (325 AD), which St.Nicolas attended. In that case, the emperor depicted is Constantine I (the Great); the representation corresponds to the usual Byzantine iconography of the saint emperor.
The frescos must be dated around the 12th century, since this part of the church was built in the mid-11th century, and the city of Myra was completely deserted by the early 14th century.

Pictures takaen during several visits, with different cameras, light, editing.