In Mohawk Park, one of the largest municipal parks in the United States, with indoor habitat buildings, mature grounds and event spaces.
A 2006 Diller Scofidio + Renfro building on the Seaport waterfront, cantilevered over the harbour with full-height glass and a grandstand facing the water.
Built between 1828 and 1862 in Greek Revival style, with a cast-iron dome and painted rotunda, standing between downtown St. Louis and the Gateway Arch.
The oldest art museum in the Pacific Northwest, founded 1892, with a Pietro Belluschi-designed building. Museum lighting is the challenge; the architecture is the reward.
Begun 1791 on Jackson Square as the twin of the Cabildo, completed in the 1810s, now part of the Louisiana State Museum with arcaded galleries facing the square.
On the Churchill Downs grounds, a museum of the Derby with exhibition galleries, a 360-degree theatre and access to the track and the twin spires.
Founded 1995 at the foot of Federal Hill on the Inner Harbor, covered in mirror mosaic with a sculpture barn and giant whirligig. Joyful, chaotic and entirely un-neutral.
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.
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.
Completed 1799 on Jackson Square, the Spanish colonial seat of government where the Louisiana Purchase transfer was signed, now a Louisiana State Museum.