The Sentina Natural Regional Reserve was established in 2004 by a regional law and is the smallest Park in the Marche region.

For the natural organization of the places, Sentina is considered a homogeneous system of land, river, and lake areas, a landscape of waters and sand covering an area of 177.55 ha, entirely in the territory of the Municipality of San Benedetto del Tronto, between the town of Porto d'Ascoli in the north and the river Tronto in the south, between the coastline in the east and the railway line in the west.

Sentina Regional Nature Reserve represents for San Benedetto del Tronto an invaluable treasure for its natural environments, life quality, and a differentiated tourist offer completing the already existing proposals offered by the seaside tourism.

The Habitat: dunes, wetlands, salty meadows and agricoltural land