The patron saint of Seborga is Saint Martin of Tours, celebrated on 11 November, in the parish church whose first foundation dates from the first half of the 17th century: its facade, frescoed in 1928 in the Baroque style, houses a chalice dated 1575 and a wooden statue of the Madonna and Child, of Provençal or Spanish workmanship.
Facing the parish church stands the Palazzo dei monaci, the 17th-century former residence of the Lérins monks and seat of the principality's mint, later becoming, after annexation to the Kingdom of Sardinia, the seat of the town hall and schools. In antiquity, access to Seborga's historic core was closed by four gates, including the Porta San Martino. Since the 1950s, some members of the community have claimed for Seborga an alleged ancient status as an independent principality, minting a symbolic coin called the luigino, with no legal value but of interest among numismatic collectors.
