And Now For Something Completely Different,

butterflies in cases,

but not in a museum or hung on a wall, 

 the wall is the case!

 France-based street artist Mantra has been unveiling a series of trompe l’oeil murals, 

 that convert the facades of commercial and residential buildings into larger-than-life butterfly display cases in Spain, Austria, France, and Bogota,  

above are a few pieces from the last year, and you can see more examples on Facebook, what a totally different take on street art.