The architecture of Kea is strongly influenced by the authentic Cycladic architectural style, the features of which adorn the entire settlement of the island. Flat cubic houses built very close to one another become one with the small narrow paths reflecting the vibe of ancient times. Ioulida presents a mix of traditional and neoclassical elements, both of which can be admired within and outside its borders. It boasts some beautiful buildings, while from the top, where the Venetian castle stands, the view to the rest of Ioulida is full of red tile roofs and lovely blue-domed churches.
Today, the ancient paths of Kea island extend from one village to the other, and visitors can have a complete view of the island's history through a long walk. One of the island's attractions is the Hellenistic watchtower of Agia Marina, rising from the grounds of a 19th-century monastery as well as sculptures and prehistoric sites, like Korissia, an archaic settlement with remains of houses and temples.
In Ancient Karthea, a significant but still unknown ancient site in the Greek islands, lie the temples of Athena and Apollo, the Temple of Asklepios, and an Ancient Theater; these constitute some of the most eminent architectural specimens on this island. Visitors can enjoy their stay in traditional hotels that have respected Cycladic architecture and match perfectly with the surrounding areas.