Behind the town centre it rises the Torrione (Big Tower), the other symbol of Forio, the greatest among the 9 guard and defense towers built along the westerly side of the island during the 15th century; today it hosts the Civic Museum. The historic centre of Forio, comprised between the Church of Aid, the Big Tower and the Monterone hill, shows the characteristic medieval structure with irregular ramification of narrow and tortuous streets, having the double function of windbreaking and of protection by Saracen forays, since they could be easily controlled and defended.

Other monuments of some historic and artistic interest are: the church of Santa Maria di Loreto (Our Lady of Loreto) in Forio centre, built in 14th century and rebuilt in the 18th, with some works by local painters. The church of San Vito near the Big Tower, which holds paintings from the 17th century and a silver statue of the 18th. The baroque sanctuary dedicated to the Madonna di Montevergine, on a suggestive location upon the hill that overhang the beach of San Francesco; it keeps a painting by Luca Giordano. The churches dedicated to San Borromeo and St.Michael the Archangel, on the limit of the historic centre. The church of Santa Maria del Monte (Our Lady of the Mountain), at the foot of Monte Nuovo, completely built into the rocks.

In the territory of Forio there are also many elegant villas, among them the most renown is La Mortella, located in the area of Zaro, near the borderline with Lacco Ameno. It was bought in 1949 by Sir William Walton, one of the most important British composers, who felt in love with this place and decided to turn it into a small Garden of Eden, a Noah's Ark for flowers, where to save a large amount of rare plants (there are kept about 300 species). In 1956 he called to make the definitive plan one of the major garden's architect of the century, Russel Page. Inside the villa you can enjoy an exhibition of historical pictures of the composer, performed by the great photographer Cecil Beaton.

Finally, in the hill hamlet of Panza on South, there is the Farmer's Museum, showing the tools and the lifestyle of country society, which informed for centuries the life of Ischia island and especially of Forio. The museum contains also the pictures taken from the plane for the topographical reliefs done in the middle of 20th century and showing the difference of settlement before tourist development. From Panza, taking a path which goes down among the cultivated fields on the hill slope, you can get to Sorgeto, a small and suggesting cove on the southern coast of Ischia, with a thermal fountain that gushes near the sea.