Old capital of the island and now the seat of the Bishop with a characteristic layout and architecture of the houses with red tiles, spacious courtyards and decorative relief. Invisible from the sea was built on the slopes of the Middle Ages and ancient Venetian castle, where the residents of Potidaiou withdrawn within the island to deal with the pirate raids. A stream divides the green in two and Aperi a bridge uniting the two slopes.

Traditional houses built in mountainous and inaccessible location and that was the main motive for the transplantation of refugees and Vrykountos Nisyrou the period of Arab raids (7th-9th century). Today's settlement is much greater than the original medieval , having spread to the slopes as soon as the pirate threat was removed. In the mountains there are more than 80 windmills in a row.

Pigadia is remarkable in public buildings such as town hall, the post office and police.