Crossword L[v]overs

This is pretty cool, via Gizmodo: an apartment building in Lvov, Ukraine, on whose edifice is painted an enormous crossword puzzle.
And the clues? Well, they are

located in different point of interests of the city, like monuments, theaters, fountains etc. So people while walking around the city can try to answer the questions and writing down the answers.

If you're stumped, all you have to do is wait until dark; the grid has actually been filled in with fluorescent paint that glows in the dark.
I wonder if being able to complete the puzzle is a requirement for living there. I can see it now: being evicted for not knowing 41-across.