The heart of the main square is dominated by the fourteenth-century Palazzo dei Vicari. Its name comes from the vicari, the officials who lived in the palazzo and governed the area on behalf of Florence. Restoration work after an earthquake in 1929 gave the palazzo a striking resemblance to the Palazzo Vecchio in Florence. According to some, the two palazzi had in fact been originally designed by the same architect, Arnolfo di Cambio.
The façade is speckled with the crests of the various vicari: the most interesting specimens are those in terracotta, which came from the workshops of the Della Robbia family and from Benedetto Buglioni. Inside, the building is full of Renaissance frescos, which contrast with its stark exterior. The first room you come to on the top floor contains a Madonna and Child with Saints from 1554, by a member of the school of Ghirlandaio.
Also inside the palazzo, you can visit the Museum of Cutting Tools and take a journey through Mugellan craftsmanship: Scarperia, after all, is famous for its knifemaking.
Two interesting religious buildings also face onto the main square: the Propositura, founded in 1326, and the Oratory of the Madonna di Piazza, which goes back to 1320 and is where the vicari were invested. The Oratory contains Jacopo del Casentino's painting Madonna di Piazza, which was found, according to legend, in the piazza's water well.
All that remains to mention is the Sant'Agata Sacred Art Collection and the Sant'Agata Centre of Archaeological Documentation.