When travelling, I always look for signs of graffiti, street art or similar expression. For me the amount of urban art reflects the amount of creativity, the degree of freedom, the possibility of being critical, and the presence of humoristic sense. A clean, sterile city or suburb is boring, depressive and claustrophobic.
After a walk around in Cancun center, I give thumbs up for a lot of stickers and some murals as well. I guess the murals are commissioned, while the stickers probably are illegal. Some of the stickers may be ads as far as I know. Sometimes the difference between ads and art is hard to distinguish.
It's all about getting up high
Sometimes the pieces just expand and evolve
Not sure whether this is art or an accident
Mural Mayas. By the way they are also famous for their murals, on stucco
This beautiful piece probably increases the rent on the building
Even weirder stuff
Some prepare their stickers with cuts to make them impossible to remove