Monte Argentario (known simply as Argentario) is a peninsula in the Southern Tuscany. It is linked to the mainland by three dams which form two lagoons, the Laguna di Ponente on the west side and the Laguna di Levante on the east side.
Major centers of Argentario are Porto Santo Stefano, Porto Ercole, and Orbetello.

(View on the map)

View from Mt.Argentario
(photo by Bowman77; this photo is licensed under the Creative Commons license).

View more photos (click over the images to enlarge the view).

Argentario - Porto Ercole	Tuscany - Argentario Promontory
Tuscany - Argentario	Tuscany - Orbetello
Tuscany - Argentario	Tuscany - P.Ercole Fortress