If you'd like to inject a little more culture into your trip, put Franco Anelli Speleological Museum on your must-do list. Check for guided tours or simply roam around in your own time.
You'll soon see why this Castellana Grotte museum is popular with travelers. If you're looking for more to see and do here, Castellana Caves, Il Parco dei Dinosauri, and Grotta del Trullo are in the area as well. They won't take you long to get to from Franco Anelli Speleological Museum.