Villa Medicea di Arena Metato, Renaissance villa in San Giuliano Terme, Italy.

Villa Medicea di Arena Metato, also called Villa L'Ammiraglio, stands at Via Cavour 35 in Arena Metato, San Giuliano Terme. The two-storey rectangular block has two turrets at the ends of the facade and kneeler windows with tympanums in pietra serena, in Florentine style. A large marble Medici coat of arms with the cross of the Knights of Santo Stefano and the grand-ducal crown sits above the main door; the rear facade is gabled with a staircase.

Giulio dei Medici, appointed admiral of the Medici fleet at Porto Pisano in 1563, built this residence during the second half of the 16th century. The estate was created to express the family's power and wealth in the region.

The villa's name L'Ammiraglio recalls Giulio de' Medici's 1563 appointment as admiral of the Medici fleet at Porto Pisano and of the Order of Santo Stefano. Inside, a large hall with a pietra serena fireplace bearing the Medici coat of arms leads to rooms with wooden or frescoed ceilings; two vaulted rooms were painted in the 19th century by an unknown Pisan artist.

The villa is a private residence at Via Cavour 35 in Arena Metato, and visits are by arrangement rather than on a fixed public schedule. The surrounding park covers about 7,000 square metres and is planted with centuries-old holm oaks.

Giulio dei Medici, the villa's first resident from 1563, was the natural son of Alessandro de' Medici and of an African slave, as the sources state. His father Alessandro was himself the natural son of Lorenzo, Duke of Urbino. Above the main door, the marble Medici coat of arms carries the cross of the Knights of Santo Stefano and the grand-ducal crown.