The town of Crespina is in the province of Pisa and has a population of about 3,700 inhabitants. Here, the church of San Michele, where some XIV-century paintings are kept, can be visited. Numerous villas of the Pisan aristocracy, among which Villa Valdisonzi and the Baroque villas of the Canonica and the Belvedere, rise in its neighbourhoods.

The castle of Crespina has been known since the X century and the bishopric of Pisa dominated it before it was included within the jurisdiction of Lucca. Yet, the most ancient document where it is cited dates to 1119. In that year, the archbishop of Pisa obtained some lands as a gift that were set "in valle de Crespina". In 1165, the fortified village went through the occupation of the Republic of Pisa that dominated it for all the XIII century, except during a short time when Lucca ruled it.
The territory of Crespina was included in the Pisan Captainship of the Lower Hills and it soon became the target of incursions and pillages by the Florentine troops, which were fighting against this sea-faring republic. Thus, this town was important because it supplied Pisa. In effect, huge quantities of wheat, grapes and olives were cultivated in its countryside. After several attacks, Florence could pull down part of the stronghold of Crespina in 13332, even if a definitive conquest of the town took place only in 1405, at the end of a long and tiring siege.
In 1415, the town became part of the vicariate of Lari as a Town Hall. Yet, the inhabitants of Crespina did not accept the Florentines' project of dismantling the castle. When the Visconti's troops from Milan arrived here under the guide of the leader Piccinino (in 1431), the inhabitants of Crespina started a rebellion against the Florentines and it was repressed with violence. The fortress was definitively razed to the ground in 1434.
In the modern times, Crespina was the first town to be annexed to the Captainship of Livorno in 1680 and, after the Leopoldine reforms, it entered the town of Fauglia, from which it detached in the XX century, only. Crespina became one of the centres of the Pisan territory with the strongest Socialist presence in the XIX century, above all during Fascism, because of its economy still centred on agriculture, livestock farming and manufacture production. In the last decades, the main production sectors are the wine growing, the textile and timber sided by the growing tourism sector.