Portobello Panama has a very rich history. It was a major port that housed all the important goods transported between Spain and South America including gold and silver. As a consequence it was a port under constant attack by pirates such as Captain Morgan.
The bay has four different forts available to hike and explore. It also has a small museum housed in the old customs house, where the gold was kept.
For a more substantial history see the links below
History of Portobello on Wikipedia
Fort -Unesco site