There are two sections of the city. Falerna, the oldest section, lies atop a set of cliffs. Falerna Marina is situated on the seashore and boasts a fine beach and several hotels. Castiglione Marittimo is a "frazione" of the Falerna municipality; it is a former Norman outpost.
Many of Falerna's sons and daughters emigrated to the United States, in particular western Pennsylvania, and a few have returned to their home town in retirement. Older residents speak a distinct dialect of Italian known as Falernese. It is dying out as media and schools continue to standardize the Italian language throughout the nation.