I've never been to a planetarium but it seems like something I would fully enjoy!
I did once do acid (crime paper) and climb on a roof (safely) and stare at stars. this was in college, before I lived in the sleepless city1 so I could actually see stars and it was very nice.
earlier in that same night, right after I ate the drug squares, I tried to go to a convenience store (this was all walkable) before it kicked in, but didn't quite make it out of the convenience store before it kicked in and could not figure out how to get out of there because my brain was like "you have to pay for things, which requires being perceived there must be another way".
eventually I did get out of there (I am not typing this from a convenience store in connecticut) when a friend happened to show up and I asked them to guide me out. i handed the clerk a twenty dollar bill with both hands, which for some reason stands out in my memory, and he said "have a nice trip" because the convenience store was like 4 aisles and he had a fully unobstructed view of me wandering around for like 25 minutes muttering to myself, he knew exactly what was going on.
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there was a several year stretch when I did not leave the city, but then I had to go to a wedding out of state and at one point I looked up and involuntarily gasped "holy shit" because I completely forgot about stars and there were so many