I think that one of the most fascinating and fun types of art is street art. Not necessarily graffiti, but something that makes a place feel almost magical, not scared. it is so amazing how someone can take an old dirty wall or broken apart concrete stairs, and turn it into a masterpiece.
Street art can even bring people together like having festivals where artists can come and draw chalk drawings all over the street and people come from all over and just have a good ol time. My favorite type of street art is when people take something thats grossa and dirty, something that someone would usually throw away and makes it beautiful!