Really easy to find - right next to the underground station. Every ride is paid separately which allows you to enter the park for free and pick your favourite rides. A good variety of rides ranging from the more traditional through to much more modern hi tech and scary rides.
This is a place where you can spend you free time in a fun way. I would recommend the Prater Turm. Turning around 117m above the ground is somewhat scary but on the other hand you have a fantastic view. The oldest wheel in the world. Most people go to ride the large Ferris wheel (the main purpose of our visit), but there is much to do here. We also enjoyed the Insider - an indoor roller coaster. This is a perfect place for adrenaline junkies. There's also a nice selection of fast food. A place where all of Vienna comes to relax on a sunny day. When in Vienna this is a must.
Photos taken with Sony DSC-HX50B.