Parco GruBrìa, Nature reserve in Desio, Italy.

Parco GruBrìa is a local park of supra-municipal interest formed in 2019 by merging the Grugnotorto Villoresi and Brianza Centrale parks. Its southern core lies between Nova Milanese, Paderno Dugnano and Varedo, crossed by the Villoresi Canal and its secondary Roggia San Martino. The landscape combines cultivated fields with active farmsteads, reforested woods and equipped oases; the historic Bosco Bello survives between Varedo and Desio.

The park was formally established on 19 December 2019, when the Consorzio Parco Grugnotorto Villoresi was dissolved to create the new Parco Grugnotorto-Villoresi e Brianza Centrale (GruBrìa). Its southern core, between Nova Milanese, Paderno Dugnano and Varedo, was protected from 12 November 1999 by a protocol signed by six municipalities; the Brianza Centrale park around Seregno was set up in early 2001. Bovisio Masciago joined in 2008, Desio and Lissone in 2017.

The name Grugnotorto appears in the Catasto Teresiano of 1722 and survives as a place name in Nova Milanese; it may come from the Latin grumus, a mound of earth, and tortus, twisted. A local folk etymology instead reads it as a mistaken Italianisation of the Lombard Grand òrt, "large vegetable garden".

Access is possible on foot or by bicycle, with multiple entry points and trails that wind through the different municipalities. The consortium provides an interactive map and information about seasonal activities to help visitors plan their visits.

The name Grugnotorto appears in the Catasto Teresiano of 1722 and survives today as a place name in Nova Milanese. It likely comes from the Latin grumus, a mound of earth, and tortus, twisted, though locals prefer the reading Grand òrt, Lombard for a large vegetable garden.