This town extends around the junction of the rivers Saja and Besaya forming a estuary, also known as San Martín de la Arena. The river forms a natural harbor between cliffs (called Punta del Dichoso) in which many historians locate the roman "Portus Blendium", famous in the past for its navy and great commerce, it became the most important route of entry of the Cantabrian coast.

Suances offers the opportunity to enjoy a wide range of cuisine, sports, water sports and a lively atmosphere in summer.