It is named after a huge guanacaste tree that escaped being logged because its trunk divided into three bases, reducing its value as timber.

The park's workers recommend that visitors wear long-sleeved shirts, sturdy shoes and pants to avoid contact with poisonous plants.

Belize's reputation for an extensive biodiversity is also evident in the park's wide range of animals that tourists are able to observe.

There have been recorded over one hundred different bird species, including the Lesson's motmot and black-faced antthrush.

Other birds seen at Guanacaste Park include the smoky-brown woodpecker, black-headed trogon, red-lored amazon, the magnolia warbler, belted kingfisher, and the bright-rumped attila.