Cast shatter on the otherside of a wall

So I was wondering if you could cast shatter on the otherwise of a wall or a point that you can’t see. Shatter says that you it casts from a point that you choose. Doesn’t say anything about how it’s casts besides from it erupting from a point so it’s not a line. And would that mean I can cast it in a room above me for example without even needing to see it. It says that if it’s you cast an AOE it comes onto the nearside of that obstruction, is that based on a line from where you cast or where the spell origininates.