Kamara (Arch of Galerius).
Sent by Christina, a postcrosser from Greece.
The Christian monuments of Thessalonika are outstanding examples of churches built according to central, basilical and intermediary plans from the 4th to the 15th centuries. For this reason, they constitute a series which is a typological point of reference. The influence of the Thessalonian churches on the development of the monumental arts was considerable, first in the Byzantine and later the Serbian world, whether in the early Christian period of the high Middle Ages or the Palaeologan Renaissance. The mosaics of the Rotunda, St Demetrius and St David's are among the great masterpieces of early Christian art.