The Molí de les Tres Eres, the Mill of the Three Ages, formed part of a chain of three water powered flour mills that operated in Cambrils from the 14th century until the late 19th century. After being put to a variety of uses and after years of neglect, finally the old flour mill became the headquarters of the Museu d’Història de Cambrils (History of Cambrils Museum). It currently houses two permanent exhibitions that explain the development of the municipality.

The archaeological exhibition "Cambrils: the origins" takes a historic journey from prehistoric times to the late Roman period, through Neolithic Iberian and Roman objects that come from the various archaeological sites in the town. In particular, the Roman villa of La Llosa. Notable is a lapidary or carved stone with a representation of the adolescent god Bacchus and an oil lamp decorated with a mask, both from the 1st century AD.

Once the mill had been renovated in 2001, a permanent exhibition was opened in the milling room called "El Molí de les Tres Eres: testimoni viu del passat" (Mill of the Three Ages: living testimony of the past). Here, visitors can see the miller’s equipment and machinery and, once a week on the guided tour, the mill is put into operation. After more than 100 years, the mill has not only gone back to grinding wheat and flour, but has also become a living example of pre-industrial heritage.