Moody Gardens, Galveston, Texas
It began two decades ago as a barn and arena offering horseback-riding therapy for people with head injuries. The complex now includes outdoor and indoor gardens, an aquarium, a hotel, a spa, and a convention center. The best part: the Rainforest Pyramid, a 10-story wonderland of plants, animals, fish, and birds from rain forests around the world. Moody also still offers therapy programs and employment for people with disabilities; 800/582-4673 or moodygardens.com.