Estrella Del Mar Sea Turtle Sanctuary is a lighter, activity-led stop for travellers who want a break from conventional sightseeing. It is most useful for families, groups, or anyone building a day around entertainment rather than monuments. It sits well outside the centre, so treat it as a deliberate side trip rather than something to squeeze between central sights.
Check prices, opening season, and booking requirements before you commit. These places can be excellent on the right day and skippable on the wrong one, so treat it as an option to fit your mood, weather, and available transport.