San Nazzaro Sesia, a comune in the Province of Novara, Piedmont
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On 25 April 2010, the former municipalities of Caviano, Contone, Gerra Gambarogno, Indemini, Magadino, Piazzogna, San Nazzaro, Sant'Abbondio and Vira Gambarogno merged in the new municipality of Gambarogno.
Pino sulla Sponda del Lago Maggiore borders the following municipalities: Brissago (Switzerland), Caviano (Switzerland), Gerra (Gambarogno) (Switzerland), Maccagno, Ronco sopra Ascona (Switzerland), San Nazzaro (Switzerland), Sant'Abbondio (Switzerland), Tronzano Lago Maggiore, Veddasca.
The hamlet of Alabardia, once part of the parish of San Nazzaro, became widely known in 1783 as the center of Horace-Bénédict de Saussure barometric experiments conducted around Lake Maggiore.