Waite Phillips' 1927 Italian Renaissance villa in Tulsa, now an art museum, with around 25 acres of formal gardens running down to a tempietto.
Baltimore's 1888 Victorian conservatory in Druid Hill Park — a glass palm house with linked growing houses. Green, humid, and lit entirely through glass.
Opened 1878, the Peabody's stack room rises five tiers of cast-iron balconies to a skylight sixty feet above. One of the great interiors in America.
Isabella Stewart Gardner's 1903 Venetian palace in the Fenway, built around a glass-roofed courtyard. One of the most beautiful and most restricted interiors in Boston.
A museum in Honolulu with late nineteenth-century basalt buildings, a koa-panelled galleried hall and open lawns.