Hey Stan! Yes, you are right - that’s Apple Maps on the left and Notes on the right.
So, I created a Guide on Apple Maps for all the tourist spots I want to visit and then copied the link from Maps and pasted it on Notes. If you have Maps on split screen then tapping the Maps link on Notes will automatically pop up on Maps on the screen. I did the same for Reminders.
The only con being that Markup does not work that well on Notes if you have all these links and images in your note. Ideally, I would prefer Freeform for making a Travel Guide but decided to go with Notes as it is much more handy.
Let me know if there is anything else I can help you with for this Traveler Guide technique.