Chignolo d'isola is placed in the heart of the Island, of which it vaguely imitates the form of a triangle with the tip downwards. In 1928 Chignolo was unified to Madone and got the name of Centrisola just to underline the central place among the River Adda, the River Brembo and Mount Canto.

In a clockwise direction Chignolo borders on Terno, Bonate Sopra, Bonate Sotto, Madone, Bottanuco, Suisio and Medolago.

The village of Chignolo lies decentralised if compared with the great traffic lines which, especially in old times, led from ports on the River Brembo near Bergamo to the ports on the River Adda in Capriate and in Villa d'Adda.

Nevertheless, just because of its central position, the territory was crossed by a thick net of secondary roads which connected the different villages of the island. The present road system largely imitates the old one, with irregular and winding lines even of main roads.

"the palace of deliciousness of the above praised noble family….shows how once upon a time this village was fortified with a castle as fashion"

So did Giovanni Maironi write at the beginning of the nineteenth century, when the earls Roncalli, noble family coming from Roncaglia of Cepino in Val Imagna, carried out a fundamental modification of the building risen on the basis of an old castle already existing in the 12 century.

During the XVIII and XIX century the Roncalli family had the palace restored which was in most part demolished, and only the southern side was kept.

The western side wasn't rebuilt in order that from the central body you could overlook the whole Bedesco.

 To the Chignolo Palace all those buildings were adjoined which were necessary to manage a large property, from the wine-press to the spinning-mill, from the drying-room for cereals to a large farm with spacious barns placed between the palace and the old parish Church, at the slope limits.

Chignolo d'Isola boasts four churches in hits history which have accompanied the religious life of population throughout the centuries.

In one report written on occasion of the pastoral Visit of the Bishop of Bergamo in 1535, St. Mary's Church is described as placed "in the centre of the built-up area and of sufficient width for the population". Nevertheless St. Mary's was not the Parish Church. The actual parish Church was St. Peter's in Campis, a small building standing on a field called St. Peter's in Campis till now (today the cemetery).

Even St. Mary's was later on replaced by the Sanctuary (of which it occupied the current consecrated ground) after about two centuries since it couldn't contain the population any longer which counted 250 inhabitants in 1535 and about twice in 1700.

In 1746 St. Mary's was demolished and its choir transformed into the Horatory of St. Rocco, later on called of the Addolorata (part of the building against the belfry.

But the population was growing and the church was becoming too small.

 So they decided to build a new building. In 1870 the project was approved and 15 years later the "new Church" was ended in its general structure. It was definitely opened to worship in 1886

Such fountains were planned not only for domestic uses and irrigation purposes, but also for washing, as proved by their geometric form.

The fountains are made of "botticino" marble, which is very similar to the calcareous one from Zandobbio from which it differs because of the presence of fossils.

In the fountain of XXV April street the two bathtubs are, on the contrary, opposite with the main panel in the middle, modelled as concentric circles and turned towards the smaller bathtub.

The vertical panel is the geometric and ornamental element which distinguishes the two fountains and it is ornate on both sides even if the main front has got more relief. Both bathtubs of the two fountains communicate by means of some linking holes.