A Richard Meier–designed residence conceived as a livable art gallery has quietly entered the Dallas market for $23 million. Set within the Park Cities enclave, it was built to house an 800-work collection now pledged to the Dallas Museum of Art.

Designed by Reginald Johnson—one of Southern California’s most influential early-20th-century architects—this 1917 Italian Renaissance Revival home in Pasadena’s coveted South Arroyo neighborhood combines classical European proportions with relaxed California living.

On the wooded slopes above Lake Maggiore, few homes break from tradition like Pinwheel, a 2021 residence with a pentagonal form and sculptural white façade designed by JM Architecture.

Commissioned in 1740 under the Spanish Bourbons, Castillo del Príncipe — named for the son of King Charles III — is a rare horseshoe-shaped coastal fortress restored into a nine-bedroom retreat overlooking Galicia’s rugged Costa da Morte.

Set above the Somme River near Abbeville (1h40 from Paris), this 18th-century pink-brick residence is positioned atop a series of terraces with century-old greenhouses—each nearly 100 metres (328 feet) long—among the largest in private ownership in France.