Click on the picture to enlarge.
We saw many old orthodox churches from the Byzantine period. Architecture and decorations are interesting, but one of the first things I noticed was the exterior and the mixture of building materials. Very often were two different “stones ” used as bricks and rocks, like this::
Bricks are used both vertically and horizontally around the rough rocks, her two layers of bricks horizontally and two vertically, but sometimes only one. Concrete was well-known from the Romans.
The bricks were used always, but the other “rocks” change:
The girl with the cap is our Macedonian tour guide. She was archeologist and knew the history of the region!
Two examples more:
The last example is from the church with the best location on a plateau into Lake Ohrid. See how the bricks are used differently between the rocks. (Enlarge the picture)
It may be look strange that such building element is so interesting to me. I compare it with Myanmar where they only used bricks even to the largest buildings. The stupas are compact and consist of millions and millions of bricks, probably because Myanmar have very few or any quarries. Macedonia has plenty of moutains and rocks and that is reflected in the walls.