Puerto Princesa Butterfly Garden is a small, easy stop focused on butterflies and other local species. It is not a major reason to visit Palawan, but it can be worthwhile for families or anyone wanting a low-effort nature stop between larger excursions.
Keep expectations modest: the visit is short and depends on conditions in the enclosures. It works best as part of a half-day around Puerto Princesa rather than as a substitute for the underground river, island hopping, or mangrove areas.