With multiple spaces to choose from including the Fels Planetarium the Franklin Institute offers fun and elegance for up to 350 guests. Attendees can enjoy a cocktail hour near the Giant Heart followed by dinner (created by the Institutes exclusive caterer Frog Commissary Catering) and dancing under the 82-foot marble rotunda in the renovated Franklin Hall. Prices start at $135 per person plus service fee and tax; $1500 ceremony fee.