Open Apple Maps in iOS 13, scroll down a bit in the.. sheet? drawer? whatever we call it, and there is a new dedicated section called Collections.
These are a great way to bookmark multiple places together, like your favorite restaurants around town or places you visit, or places you want to visit. I created one to list things like my doctors and services around town in order to get them out of my contacts.
Extra tip: Tap into a Collection and there’s a Share Sheet at the bottom (on iPhone, you might have to swipe up). While you can share Collections with other people, it doesn’t appear they can be edited collaboratively like Apple Notes.