The quickest in-game answer is: open the Events menu, pick the When We Look Up at the Moon tab, press Go , then follow the quest path through the Moonlanes to reach the area and start the Moon-related questline.

What players are talking about

A lot of recent discussion around “how to get to the moon” in Genshin is really about the new moon quest content, not a literal free-roam moon location. One guide says the quest sends you to the Frost Moon and later has you choose among moon destinations, but the machine only allows the Frost Moon at that stage.

If you mean the quest area

To continue the moon storyline, the guide says you should:

  1. Open the Events menu and enter the moon tab.
  2. Press Go to teleport to the starting waypoint.
  3. Use the Moonlanes to reach Columbina.
  4. Follow the quest until the moon destination becomes available.

If you mean revisiting it later

Some players report that returning to the moon area after the quest can be tricky or unavailable outside the intended quest flow, while other guides describe a separate return path tied to later Archon Quest steps.

Forum-style take

“It’s not a normal map destination you just unlock and keep forever; it behaves more like a quest instance tied to the moon storyline.”

If you want, I can turn this into a step-by-step quest route or a short Reddit-style answer.