noun jux·ta·po·si·tion
the act or an instance of placing two or more things side by side; also : the state of being so placed
“-such juxtapositions include old and new, residential and commercial, historic and replaceable, natural and man-made, constructed and under-construction, well maintained and in disrepair, celebrated and forgotten, etc.”
my first thought of this word was that it probably meant arrangement of some kind.
source: Merriam-webster.com