Yep, those little painted pebbles are remnants of the old Berlin Wall.
Let's dissect the collage from my photo album page and take a closer look.
With a lot to say.
Both on the wall itself, and around its disappearing remains.
Oh, and there were plenty of broken windows, and abandoned buildings, and such.
The East side of Berlin had a whole different vibe -- more subdued, more serious, less trusting.