Erve, or Valderve, as it used to be called with reference to the homonymous valley in which it is located, can be reached through the steep road that from Rossino climbs up along the rugged canyon overlooking the river Gallavesa. Further upstream, the small river divides Erve lengthways with numerous bridges that connect the buildings on the two sides of the river, giving the village a picturesque appearance.
Among all the different small villages (Costalottiere, Saina, Cereda, Prà Molon today known as Pratomolone), the small village of Nesolio is connected to the rest of the villages only through a mule track and is nowadays practically abandoned. It seems it was the first real settlement in Val d'Erve and, as the tradition wants it, it should date back to the Franks. The existence of Erve is confirmed by some documents dating back to the XV century, when in 1419 the delegates of the municipalities of Valle San Martino went to Milan to swear their loyalty to the new lord Filippo Maria Visconti. The inhabitants of Erve were represented in fact by a delegate from Rossino. Erve is then mentioned in the Val San Martino Charters, dating back to 1435.
In 1428, the small settlement fell under the control of the Republic of Venice and so began the never-ending disputes regarding the border between the Duchy of Milan and the Venetian State that will last for centuries until the occupation of the Napoleonic troops and the creation of the Cisalpine Republic. With Napoleon, Erve is included in the Dipartimento della Montagna, headed by Lecco, while in the definitive territorial planning of the Kingdom of Italy it was assigned to the Dipartimento del Serio, as part of the Bergamo District and of the Canton of Caprino.
Later on, Erve, yet still maintain its independence, became part of the province of Bergamo until the 1992 when, together with the other municipalities of Valle San Martino, was annexed to the new province of Lecco.
During its whole history, the population of Erve was forced to migrate due to the precarious conditions of life: at first all the turners and charcoal burners were moving to Venice, but this migration stopped in the XIX century. During the XX century, the population started moving to Calolziocorte, Lecco and Milan, but also Switzerland and France in search of better working conditions. The two World Wars put a strain on the already difficult conditions of life of the inhabitants of Erve, but after WWII Erve became a popular destination, where people from Milan and the Brianza area liked to spend their holidays looking for peace and admiring the beauty of the natural landscapes of the area. Still today, Erve is the perfect starting point for many excursions.