This is the easiest "discover all named locations
" cheevo in BL3.
I would highly recommend
to unlock most of the locations while your first playthrough since you're always near those locations while doing the main mission.
You can also do this after you beat the game. To get this achievement easier, don't
turn Mayhem Mode / True Hunter Mode on, just to get it rushed.
There is a location you can't unlock without doing a particular side mission.
I added a list of all those locations in Nekrotafeyo. http://www.powerpyx.com/borderlands-3-nekrotafeyo-all-named-...credits to PowerPyx for providing those informations