Set in the Val di Noto, a region celebrated for its UNESCO-listed Baroque towns, the property was commissioned as a summer residence by two noble families in the late 1800s. It features grand reception rooms, shaded loggias, a panoramic tower and former stables converted into guest accommodation.

Restored in the 1970s, Castello Avogadro Spada became a cultural salon that hosted Italian industrialists, royalty, and contemporary artists such as Cy Twombly, Christo, Alberto Burri and Michelangelo Pistoletto.

Built around 1640–1644, this hôtel particulier, or private Parisian mansion,is associated with the noble Le Bouteiller de Senlis family, it passed to the Marquis de Flammarens in 1728, during the reign of Louis XV.

Set in the Pisan hills near Fauglia, the restored villa dates to the early 20th century and is built in the Liberty style, the Italian take on Art Nouveau.

A one-bedroom apartment inside Hector Guimard’s Castel Béranger—the architect best known for Paris’s iconic Art Nouveau Métro entrances—pairs original period details with a design-led renovation by its owner.

Set on one of Avignon’s oldest streets, a short walk from the Palais des Papes, this 300 m² / 3,229 ft² apartment sits in Avignon Intra Muros, inside the city’s old medieval walls.

A 1965 Big Sur residence, reworked in the 1990s by architect Mickey Muennig, is set on a forested bluff along California’s Highway 1 within walking distance of the Esalen Institute.