On left side: 616927. Bishop Ciołek palace.  616929 Kanonicza 19. On right side: 616924. Kanonicza 14. 616926. Copernicus Hotel. 616928. Kanonicza 18. In the background: Collegium Iuridicum
The numbers are monuments' IDs.
<a href="//commons.wikimedia.org/wiki/User:Misiek2" title="User:Misiek2">Mateusz Giełczyński</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>