The name comes from San Pietro, its Patron Saint, and from casale, the farm house by which the town expanded.

The first thing to strike you on entering San Pietro in Casale is the beautiful layout of its historical centre, with its Bolognese-style porticoes and elegant ancient buildings.

Of particular note is the 19th-century Church of SS. Pietro e Paolo, and the Romanesque bell-tower, recalling the building's medieval origins. Inside there are interesting paintings from the School of Ferrara dating back to the first half of the 16th century.

A short distance away, there is the municipal park, adjoining the 17th-century Villa Padoa, which has been the seat of the Municipality since 1896 and the Cultural Park of San Pietro in Casale, composed by the Museo Casa Frabboni, the "Mario Luzi" Library and the Teenage Library connected together by the vast rosegarden.

Four cycle tracks starting in the town lead along tarmac and dirt roads into a world rich in small treasures for the attentive traveller.

The cliché of the plains is of a monotonous, unchanging countryside. In fact, it is not like that at all. In the territory of San Pietro in Casale alone, heading off in different directions, you can find notable differences. The territory to the east of the town is characterized by its valley origins, which has today become immense stretches of cultivated fields, as well as nature reserves recreated using the abundant water. The countryside to the west, by contrast, is scattered with noble houses and ancient rural buildings in more modest estates. Here you can also see some of the last traces of the most typical of the cultivation systems of the plains, known as the "piantata padana". The villages around San Pietro are often visible for kilometres for the bell-towers rising up on the plains, some of which are definitely worth a visit.

In Maccaretolo there is the XIV century Church of S. Andrea, rebuilt in 1818. Inside there is an altar piece by Alessandro Guardassoni. In Tombe, there is a large building constructed in 1490 by Giovanni II Bentivoglio on the remains of a building from the times of the Antonini Emperors, on the edge of a wide swamp near the border of the State of d'Este, then became part of the Duchy of Galliera. The Setti road between Maccaretolo and Tombe is perhaps the clearest example of Roman "centuriazione", among those spared by the ruinous floods of the Reno.

In Rubizzano, it is worth visiting the Church of SS. Simone and Giuda, containing paintings by Guardassoni and Trebbi. This is where Pier de' Crescenzi, the 13th-century founder of agronomy, retired at 70 years old. Also notable is Palazzo Bonora, a typical lowland house.

The ancient village of Poggio Massumatico is called Poggetto to distinguish it from the nearby Poggio Lambertini (today called Poggio Renatico), the birthplace of Cardinal Prospero Lambertini, who later became Pope with the name Benedict XIV. In his period, the Benedictine Tunnel was dug, the first step towards the definitive resolution of the problems of the Reno. For centuries, this area had in fact been prone to serious flooding from the river. In Poggetto, you should see the Church of San Giacomo Maggiore, whose altar piece is from the School of Guido Reni, while the apse is probably of Romanesque origins.

Along the stretch of the Navile Canal which crosses the territory of San Pietro in Casale, the right bank has an embankment with "towpaths" that can still be followed. From here you can enjoy a wide view over the countryside. Half-hidden in the vegetation is the 16th-century Ca' Gioiosa, built to house the workers responsible for the water network, which in the 18th century also had a mill.

From an environmental point of view, there are the Areas of Ecological Restructuring created near the "Casone Partigiano" (Partisan's Guardhouse) and the Nature Reserves near Poggetto and Massumatico. In the Napoleonic period, a new reclamation campaign started the definitive transformation of this land. In the same period, the cultivation of rice was introduced and became characteristic of all the Bolognese plains towards the ancient Po Delta.