
Somewhere in Athens.
Ψηφις, πλ. Ψηφιδαι (Psephis, pl. Psephidae): 1. Pebble 2. Small piece of colored stone, used in creating mosaic.
A collection of psephidae from Greece and elsewhere
Clock tower in Kozani. Actually, it's a bell tower, part of St. Nikolaos church. It was built in 1855 but the clock was added in 1935 to replace an older one, if I 'm not mistaken.