A magnificent private palace that can be visited by reservation a crocodile mummy in a private library a chocolate house an alchemical ceiling in Schönbrunn one of the most beautiful pharmacies in the world an exceptional Art Nouveau church the tomb of a fish that would have converted to Judaism a jazz museum in public toilets a public dump that can be visited like a museum the oldest organ in Vienna hidden behind a painting an empress dressed as a nun the mystery of the symbol 05 a masculine sex discreetly sculpted on the cathedral of Vienna a surprising private museum of billiards an incredible bouquet where each flower actually consists of several butterfly wings a source of water that allows to see the lotto figures for a minute an extraordinary underground annex of the Mauthausen camp where the world's first jet was built a "love hotel"  historic of great charm ...An indispensable guide for those who thought of knowing Vienna or for those who wish to discover the other face of the city.