if given a chance to visit a world from a novel you've read as a tourist, which worlds would attract you and from which novels i.e. scenery, unique features etc. keep in mind you are only a tourist.
Legendary Mechanic or Cultivation 40K? Because I am not into Xianxias anymore and prefer sci-fis.
For the former, I will like to visit the HQ of MC cuz it feels rad as I read through it.
For the latter, probably visiting MC's home world and armory for cool mechas and suits, then take a small tour to visit the demon world for their cool biotech.