El Yunque National Forest - America's only tropical rain forest

As we had to rent a car to return Robin and Matt to San Juan airport we thought we would make use of the opportunity to explore the El Yunque National Rainforest located in the Luquillo mountains, Puerto Rico.
Here we viewed beautiful waterfalls and a forest over-grown with huge ferns, thick vines, l,000 year old trees and gigantic bamboo.
A climb up the Yokahu tower offered us a breath-taking view of Puerto Rico's northeast coastline as we listened to the chattering of tropical birds as well as the park's famed tree frog (coqui).