any neighborhood where there are four definite party houses that seemingly form a diamond or rhombus shape when you're drunk. you can always crash at any of the four points and often times the partiers live within the legs.
"Where are we going to party tonight?"
"The rhombus is throwing a rager!"
"Which point on the rhombus?"
"Pink house on the north"
"Sweet, I hate crashing there though, so i'll probably crash at one of the other points"