A large Greek Revival mansion on its own city block in Natchez, with white-painted columns and mature gardens.
A Greek Revival house on landscaped grounds near Natchez, encircled by colonnaded galleries on all four sides.
In Audubon Park, Uptown New Orleans, with mature live oaks, a 1920s sea lion pool and grounds laid out among some of the city's oldest trees.
In Mohawk Park, one of the largest municipal parks in the United States, with indoor habitat buildings, mature grounds and event spaces.
Johns Hopkins' summer villa, remodelled in the 1850s into an Italianate house with a tall campanile tower, set in Baltimore's Clifton Park.
The 1904 World's Fair Palace of Fine Arts on Art Hill in Forest Park, with a 2013 David Chipperfield East Building — Beaux-Arts and contemporary side by side.
Built around 1840, the oldest surviving house in Asheville — brick, four storeys, with grounds influenced by Olmsted and mountain views from the terrace.
A circa-1799 West Indies colonial plantation-style house on Bayou St. John, with wraparound galleries, raised construction and mature grounds.
Two 1868 Italianate townhouses on Gaston Street, joined by a walled garden courtyard and run as an inn. Period interiors, and a sheltered outdoor room.
Omaha's zoo, home to the Desert Dome — one of the world's largest indoor deserts under a geodesic dome — and the Lied Jungle indoor rainforest.