Design cues from an original 1960s house led to a novel iteration of a midcentury-style California home in the Hollywood Hills. The project began with a fantastically sophisticated client from London and a request that the new house on the site balance period authenticity with a dressier, more polished European approach to craftsmanship and materiality—a setting very much created for entertaining. The elegant curving facade of the original house gave rise to the wide arc of the new structure, with a sinuous, all-glass curving wall on a 55-foot long great room that opens to the exterior and views. Shining black terrazzo floors connect spaces from indoors to outdoors in a character of high, sleek glamour. Golden Calacatta and beautifully bookmatched Greek Pentelic marble cladding, substantial wood, and curving expanses of glossy lacquer all add to the pristine simplicity, encouraging light and reflection everywhere.