Corinaldo is a town and comune (municipality) in the Province of Ancona, within the Marche region of central Italy.

It is home to well-preserved 14th-century walls, and was the birthplace of Saint Maria Goretti; it is also the site of a Halloween festival held every October, as well as being a wine country where Verdicchio is produced.

Between 1484 and 1490 they were extended towards the south with the Renaissance addition, more linear and characterized by corbels, erected by the famous Sienese military architect Francesco Di Giorgio Martini, until 1490.

The imposing walls preserve all the typical elements of the Medieval period such as murder holes, embrasures, loopholes, moats and towers telling the tales of glorious battles of the past.

The actual well was rebuilt in the 80s in the same place where the original one was, built in the 15th century by the tyrant of Corinaldo, Antonello Accattabriga.

The well is linked with a traditional folk story: a long time ago, a man was climbing La Piaggia staircase street with a sack of corn flour on his shoulders.

The current structure was designed by Alessandro Pasqui of Florence, but the engineers Francesco Fellini and Achille Buffoni also intervened on his project.