We rank the 9 Best Places to Visit in Puerto Rico. See which places our readers like the best, and vote for your favorites.

The Arecibo Observatory has a rich history ... comets and more since its debut in the 1960s. Though Puerto Rico may seem like an odd place for this important device, it was the perfect location.

Delve a little further into the island’s past with an excursion to the Cave of the Taíno Indian. Located along the seaside in ...