The municipal district headed by Fontanilles, with around 140 inhabitants, also includes the nucleus of Llabià, and it borders on Gualta, Ullà, La Tallada d’Empordà, Torroella de Montgrí, Pals, Palau-sator, Ullastret and Serra de Daró.
Almost all of the district is formed by an alluvial plain, except for the western part, where there are gentle hills, on which the villages of Fontanilles and Llabià were built.
Llabià is situated on the range of hills that surrounds the former pond of Ullastret. The nucleus of the village is dominated by the Romanesque church of Sant Romà. It was built around the 12th and 13th centuries and has a single nave with a semicircular apse and a pointed vault.
The village of Fontanilles lies on two small hills. At the northern end stands the church, while on the southern hilltop there stand the ruins of the medieval castle. Scattered between the two hills, various large houses complete the village.
The church, dedicated to St. Martin, is in Romanesque style, but other structures were added to it over the centuries, concealing its original form. The remains of the medieval castle are popularly known as “El Castellot”; in the upper part the foot of a circular tower can still be seen.