One of the most memorable stops in our trip was our afternoon visit to Vienna's Naturhistorisches Museum . As a child, I was a HUGE fan of books containing pages full of photos of the different animal species. A particular interest of mine was this book showcasing all the extinct animals with the various reasons for their extinction. I had no idea that I was gonna see all of my childhood favorites that afternoon. * Opened in 1889, the Naturhistorisches Museum stands on the grounds of the Maria-Theresien-Platz , across its identical twin building, the Kunsthistorisches , Vienna's Museum of Fine Arts.