Piombino is a coastal city on a promontory in southern Tuscany, overlooking the Tyrrhenian Sea and the islands of the Tuscan Archipelago. Its position on the Etruscan Coast has shaped both its history and its modern identity, with a working port, maritime traditions, and access to beaches and protected coastal areas. The historic center occupies the older part of the promontory, where medieval and Renaissance buildings stand within sections of the former defensive walls. Piazza Bovio extends along the waterfront and provides broad views toward the sea and nearby islands.

Piombino has deep connections with the Etruscans, Romans, and the medieval Principality of Piombino. The historic center contains several notable landmarks, including the Torrione, Rivellino, Casa delle Bifore, and the Cathedral of Sant’Antimo. The Piombino Castle houses a museum dedicated to the city’s medieval history and ceramics, while the Archaeological Museum of the Territory of Populonia displays prehistoric, Etruscan, and Roman finds from the surrounding area. Nearby Populonia was an important Etruscan settlement and is notable as the only Etruscan city built directly on the sea.

The coastline around Piombino combines sandy beaches, rocky coves, pine forests, and protected natural areas. The Archaeological Park of Baratti and Populonia extends around the Gulf of Baratti, with Etruscan necropolises, the remains of the ancient acropolis, and traces of the area's metalworking industry. Along the Piombino promontory, coastal paths lead toward coves such as Buca delle Fate, Spiaggia Lunga, and Cala Moresca. The Sterpaia Coastal Park farther north protects beaches, dunes, woodland, and wetlands, while the Orti Bottagone reserve provides habitat for numerous bird species.

Local food reflects the coastal setting and the agricultural traditions of Tuscany. Fish and seafood feature prominently in restaurants around the harbor and waterfront, while the surrounding Val di Cornia produces olive oil, vegetables, wine, and other regional products. The area's vineyards are part of the broader Tuscan wine tradition, including wines from the Val di Cornia appellation. Piombino's maritime position also makes it an important departure point for ferries to Elba and other islands of the Tuscan Archipelago. This combination of port activity, archaeological heritage, beaches, and rural landscapes gives the city a distinctive place on the Tuscan coast.