September 9, Saturday, 10:00 to 5:00 pm BUTTERFLY HOUSE. This has been a terrific year for the butterfly house. We have consistently had over 15 species of butterflies all summer with hundreds of individuals flying each day. Come on in to the butterfly house and spend a relaxing day with the beautiful butterflies. Fee: $2/member adult, $1/member child, $6/non-member adult and $2/non-member child.