Darien National Park, Panama City
Darien national park is a Unesco Biospshere Reserve, of 2,240 sq miles. It is the largest area of undeveloped land in Central America.
The park still has Amerindian tribes living in it, though it was one of their last remaining enclaves.
There are 2,500 or more plant species here as well as large numbers of bird, animal and fish species.