We are driving from the airport in San Juan to Mayaguez, and we have to make a few stops. What to see?

Okay, well this summer, my mom decided to take us back to PR. And we are going from Luis Mu�oz Mar�n International Airport to Mayaguez. My mom wants to make a stop in Caguas and Ponce. Is there anything cool to see? I haven't been to PR since my mom moved us when I was 9 years old. And I've been in the U.S. ever since. So honestly, my memories of PR are pretty vague. I just got myself a really nice camera and want to take pictures of everything. So yeah, anything interesting on the way to Mayaguez?