Blue Morpho (Morpho peleides).
The outside of their wings looks cool, but when it opened them I was stunned by the beautiful blue! This butterfly was a tease though, as it was so difficult to get a picture of the blue! - it kept closing the wings up.
Picture taken when ~MysteriousFayth
took me to Amazonia, an indoor tropical rainforest in Scotland. It was not a large complex but we still managed to spend about 7 hours in there
Oh how I wish I had a macro lens! T__T