This once isolated settlement on the northern edge of Sifnos was, until recently, only accessible from the sea by means of the summer excursion boats. Today, there is a new asphalt road and on the way to Heronissos you will come across the agricultural settlements of Trullaki and Diavroucha..
The name Heronissos means a section of the main land area, surrounded by the sea on 3 sides, or if you prefer it in a single word... peninsular! There is also a well known Sifnian song called "My road to Heronissos" and I can just imagine it being composed while walking from Heronissos to Apollonia in the days before the new road was laid, a journey which would have taken most of the day by foot or donkey.
Belonging to broader region of Artemonas, Heronissos today is a quaint and very quiet little fishing village with a couple of tavernas, and one of the popular traditional pottery workshops of Sifnos.