Lomazzo lies on the main road from Saronno to Como. It occupies an area that was covered with moors and high-tree woods until a few centuries ago. The area was then progressively reclaimed and cultivated. At the end of 1800, Gaulish tombs and artefacts were found. Besides these, the discovery of few late Roman coins and some stones leads archaeological support to the fact that the area had been inhabited by groups loyal to the Roman rule.
The names 'Limatio', 'Limacio', 'Lomatio' or 'Lemacio' reported in the first documents from the early 9th century are augmentative-pejorative of the term LIMIIE. Initially controlled by the Earldom of Seprio during the Lombard and Frank rule, Lomazzo then became part of the Parish of Appiano.
By the end of the 19th century, this little town was still a rural community characterised by feudal traditions. The first cotton industry marked a turning point in the town's life. In 1893, Francesco Somaini founded his factory here. This manufacturing complex with its typical 19th century industrial architecture and the numerous houses for workers can still be seen south of Viale Trento and Viale Somaini.

Monuments:

Church of St. Vito / The first historical information about this church originally dedicated to St. Vito and St. Modesto dates from 1170. Part of the Diocese of Milan, it is even mentioned in the oldest documents relating to the Milanese parishes. The present building has been completely reconstructed after the early structure collapsed in 1793. The beautiful façade decored with statues is particularly striking. It was designed by architect Simone Cantoni in 1794 but not completed until 1904. The construction of the dome and the bell tower began in 1919. The bell tower, at the top of which a statue of the Blessed Michele Carcano (local pride) was put, was completed in 1925. The interior has the shape of a Greek cross. Its neoclassical lines are underlined by the green - and white - striped marble. The walls contain niches, some of which house marble statues of Saints.