In the 2,500-square-foot Davis Family Butterfly Vivarium, visitors can walk among some 80 species of free-flying butterflies.  Photo 8 of 10 in A Four-Year-Old Reviews the American Museum of Natural History’s New Gilder Center

A Four-Year-Old Reviews the American Museum of Natural History’s New Gilder Center

8 of 10

In the 2,500-square-foot Davis Family Butterfly Vivarium, visitors can walk among some 80 species of free-flying butterflies.