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.
A 100-acre botanical centre south of downtown Omaha, with formal gardens, a conservatory, woodland and a Victorian garden, above the Missouri River.
A historic YWCA building in downtown Honolulu, arranged around a planted courtyard with native planting and timber interiors.
A science centre on the Cleveland lakefront, with sweeping architecture, expansive glass facades and exhibit halls.
Built 1922 in Pueblo Revival style on the corner of the Santa Fe Plaza, with adobe walls, carved timber, tin fixtures and a rooftop bar.
H. H. Richardson's 1877 Romanesque church on Copley Square, with La Farge interiors and stained glass. Magnificent, dark, and governed by church rules rather than venue rules.
Founded 1859 in St. Louis, the oldest continuously operating botanical garden in the United States, with 79 acres, a Japanese garden and the Climatron dome.
A restored 1920s theatre in Cleveland's Playhouse Square, with an elaborate lobby and a large auditorium.
George Vanderbilt's 250-room chateau, completed 1895, with Olmsted-designed grounds on around 8,000 acres in the Blue Ridge Mountains.