Small road sections here can likely be connected.

via StreetComplete 38.2

univarsolutions.com Doesn't appear to be a "place of worship".

Left turn not allowed from Βενιζέλου into Καραμανλή

This is currently a "living street" and not likely not asphalt. Needs survey and mapillary imagery.

Is this supermarket or a convenience store? Does it even still exist?

What is this place? Does it have a name? It's not a school but there must be some organization associated with these basketball courts.

Is it really possible to do a u-turn here? This whole section is a little bit suspicious.

3ο Σύστημα Προσκόπων Υμηττού

via StreetComplete 49.2

Attached photo(s):
https://westnordost.de/p/123967.jpg