Palace in a Pool is a One-Time Domain in Watatsumi Island that provides rewards after the first time completion of it. You can still play this domain however, will not get any rewards from it.
Unlocking Genshin Impact Palace in a Pool
You will need to finish the Archon Quest first and go to Inazuma. The domain is underwater when you get there. You’ll have to solve the Suigetsu Pool’s water level puzzle to lower the water level to unlock the domain.
Follow these steps to Unlock the Palace in a Pool
You can simply head outside the gate, jump back in the pool and that will unlock the Palace in a Pool Domain for you. Upon completion of this domain, you will receive 40 Primogem, 5 Electro Sigil, 2 Guides to Transcience and 30000 Mora. We hope you were able to use this as a guide to unlock the Palace in a Pool Domain in Genshin Impact! Trying to locate the Raimei Angelfish? Use this guide to find it!