“Storybook Tales: Once Upon a Train,” featuring miniature plants complete with trains as well as fairy tale and Disney characters, was on display at the Mitchell Park Horticultural Conservatory (The Domes) until April 3. Built in 1967, the conservatory consists of three beehive-shaped glass domes — the Desert Dome, the Tropical Dome and the Floral Show Dome. The latter showcases about five different themed floral exhibits a year.