Those black dots are there for a reason too: they even out the heat difference between the black "primer" that the glue sticks to and the clear glass thus preventing cracking due to thermal expansion.

Cool tidbit:

They're part excerpts from poems and novels, part made-to-order by students, one novella and two haikus. Full list of the artists here:

https://www.tampereenratikka.fi/teos/ratikan-sanataide/

Only in Finnish, sorry. English version of the site does not have the arts section :/

That's awesome! And so is Tampere, I've been there twice to visit a good friend. Absolutely lovely city!