'The Butterfly Conservatory: Tropical Butterflies Alive in Winter' - American Museum of Natural History Date: 10/08/11 through 05/28/12 Hours: October 8, 2011 through May 28, 2012. Open 10am-5:45pm daily Ages: All Price: $25; $19 seniors and students; $14.50 children Address: Central Park West at 79th Street - 212-769-5100 Upper West Side, NY 10024 amnh.org Description: This annual exhibit invites visitors to mingle with up to 500 iridescent butterflies among blooming tropical flowers and lush green vegetation inside a free-standing, balmy, 1,200-square-foot enclosure.