When: Through Sept. 30, 9 a.m.-5 p.m.
This living exhibit features fluttering painted ladies, monarchs, red admirals and more, including info about the life stages of these winged beauties and tips for creating a home butterfly garden. $7-9; free for children under 5. Open until the first frost.
Price: regular museum admission, $7-9; free for children under 5.