A historic mansion in Oklahoma City will serve as the new home for the National Native American Hall of Fame.
The Sundial Mansion, a Mediterranean-style villa built in 1919, is now the permanent headquarters for the organization dedicated to preserving and celebrating the achievements of contemporary Native Americans who have made lasting impacts on their communities and the nation. The mansion was previously purchased in 2025 for $1.2 million, according to the Oklahoma County Assessor.
The property at 4000 N Kelley Ave. carries a rich history. It was built by John Sinopoulo, a native of Sparta, Greece, on a 20-acre tract of land for his wife, Katherine de la Montaigne, and has become a distinctive architectural landmark in the area…