The largest graffiti art in Boston is in the Back Bay, and it's so well done that not everyone can see it. On top of some apartment buildings on Clearway Street is the words, 'NOZE'. Each white letter is painted on each individual building.
The graffiti is only visible to some tenants in the Christian Science Center Building, and guest staying in the Sheraton Boston Hotel, Hilton Boston Back Bay.
The NoZe Brotherhood is a collegiate secret society at Baylor University. Founded in Brooks Hall in 1924, the society was originally formed as a joke regarding Leonard Shoaf, a freshman with a large nose. Shoaf's nose was of "such great length and breadth of nostril"that his friends proclaimed they could "form a club around it". [Wikipedia]