San Faldo is one of the island cities in Paradise connected to Water 7 via the Sea Train. It is known as "The Carnival City" (カーニバルの町 Kānibaru no Machi?).
It was connected to Water 7 fourteen years ago with the Sea Train to help with trade, which was very weak at the time due to pirate attacks on merchant ships. Not much else is known about it.
One Piece Manga and Anime — Vol.
34 Chapter 322 (p. 18) and Episode 229,
San Faldo's nickname revealed.