The Parish Church of Maderno dedicated to Saint Andrew

The Parish Church of St. Andrea, presumably built on the remains of an ancient pagan temple using Roman reuse materials, dates back to the 12th century. St. Andrea is a prime example of Romanesque-Lombard architecture: the façade is made of polychrome stones and marbles, giving it brightness and movement; the interior is divided into three naves by pillars with a quatrefoil base, and the capitals represent a wide range of typically Romanesque decorative elements.

Inside the basilica, there is a painting by Paolo Veneziano depicting the "Virgin Mary with the Child". In the crypt, which was closed by order of Cardinal Borromeo in 1580 and reopened in 1962, the relics of Saint Ercolano were preserved until 1825, when they were moved to the new parish church (the sarcophagus is still in St. Andrea). The bell tower dates back to 1469.