This butterfly appears to be a Blue Morpho (Morpho peleides), a species well known for its striking iridescent blue wings when open and its brown, eye-spotted underwings when closed. The intricate patterns on the underside, featuring multiple eyespots, help the butterfly camouflage itself from predators in its natural habitat. Blue Morphos are native to the tropical forests of Central and South America and are often found near rivers and open spaces where they can glide gracefully. Let me know if you’d like more details!