The Iguana exhibit San Ignacio resort hotel is an awesome attraction. You get to be part of the Iguana enclosure. After you meet and feed the adult Iguanas you get to go into the small baby Iguana room. If you'e not shy, you can hold multiple iguanas. I had 3 iguanas on me. Normally I wouldn't allow a lizard to crawl on me, but the exhibit was so welcoming and cool that I was comfortable. The guide was great. When we left the enclosure Amanda was stung by a wasp on the knee. (keep in mind that she was already on crutches from breaking her foot the day before) The exhibit guide snatched the wasp off her leg extracted the stinger with the proficiency of an experienced guide.
I would highly recommend the San Ignacio Iguana exhibit.