The bat jungle was one of the highlights of my Costa Rica trip. The first half of the tour, a very well informed guide (with very good English) told us about the different kind of bats there are, where they are found and what they eat (ranging from fruit to animal blood!). Who knew that one bat can eat up to 5000 insects in one night? You can have a look at real skulls, touch replicated heads and find out how many bananas you would need to eat if you ate as much as a bat (335 a day for me!). The second half of the tour you go visit the 80 bats that live in the cave. You want to be there at either 9am, noon or 3pm when the bats are fed and you can see them grab food, eat it and even fight over it! What's also really neat is that you can hear the bats communicate and use echolocation. All in all a very informative experience that left me amazed!