It was incredibly dope, but I have no frame of reference so I'm now just assuming they're all like this. I did not get to see most of them on the inside as they were mostly 80 or 90C while my limit's currently at 70. Update: theme park was fucking awesome, rode my new recency biased favourite rollercoaster twice, and most impressively managed to get in 16,000 steps when my previous record in the past months was 7K. My legs are exhausted beyond compare but I had a good day.
Rule of thumb: Koreans do their spas less hard core than the Russians/Scandinavians but they also tend to be gender-separated. I prefer the Russian spas because they tend to be more hard-core. LA's is built in a former crematorium; one of the body-burners is now in the hot banya, with railroad tracks still leading out of it.