Underwater Palace

"In time, the two arrived at an ancient and secret palace at the bottom of the sea."

- G|Narrator

The Underwater Palace is an ancient castle deep in the Moonshine Sea. It is home to the Sea God and his mermaid citizens, in addition to being the location of Trident's Sushi stand.

Appearance
The palace is a Japanese-style castle built from red and white coral and decorated with statues of mermaids. A large purple crescent moon lies behind it.

Trivia

 * It is likely a reference to Ryūgū-jō, the undersea palace of Ryūjin from Japanese folklore, due to its many similarities in appearance and style, as well as being home to a sea god.