El Yunque Tropical Rainforest and bird sanctuary with trails leading to various peaks.
El Rincon The mountains run down to the sea. Popular location for surfing and snorkeling. Humpback whales can be seen in the winter.
Vieques and Culebra Quiet, unspoiled offshore islands. Can easily get to Virgin Islands from here.
Bacardi Rum Tour includes a free daquiri.
Cuevas de Camuy One of Puerto Ricos 2000 caves. This one has been set up with a swimming area, waterslide, and guided tours.