Promotional value expires Feb 15, 2017. Amount paid never expires. Limit 10 per person, may buy 1 additional as gift. Valid only for option purchased. Cambridge Butterfly Conservatory is closed on Mondays from October 17, 2016 until March 13, 2017. Not to be combined with any other discounts or offers. No cash back. No partial redemptions. Taxes included. Groupon voucher holders receive 10% off café purchases and 10% off gift store purchases on the day of your visit. Must use promotional value in 1 visit. Offer is not eligible for Groupon promo codes or other discounts. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services. Offer is not eligible for our promo codes or other discounts. Learn about Strike-Through Pricing and Savings