The green iguana is one of a number of invasive species found in Puerto Rico. It is widely assumed that these reptiles got a foothold on the island after being released into the wild by persons ...

highlights include exploring caves with ancient petroglyphs and observing wildlife like the endemic Mona ground iguana. Dubbed the Galapagos of Puerto Rico, Mona Island requires an often-rough ...

Allow several hours to visit both sites. The forts' stellar shoreline views (not to mention the occasional iguana) draw travelers to the sprawling site. Though the fort tends to draw crowds ...