You use ‘between’ for a specific location, usually separated by two things.
That’s an interesting way to use the space between those two buildings.

‘Among’ is used when the location is general and there are several things around.
I love to go to the park and walk among the trees.

You can use ‘between’ when you specify who or which, even when there is more than two
I can chose between Sydney University, UTS or Macquarie.

But when you generalize, you say ‘among’.
I can chose among several universities.
(photo from Paul White)

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