Favorite thing: If you go on a day tour to the Wienerwald, you will be picked up at around 8am and will not get back to Vienna till about 2pm. There are no food stops along the way. You may need to pop a few snacks and at least a bottle of water into your bag to have with you. You can buy snack type food in the gift shop at the Cistercian Abbey, but your choices are certainly limited. If you are in the first half of the tour to go on the boat ride at Seegrotte, you will have time to grab something at the kiosk whilst you are waiting for the second half of the group to exit the mine, but if like me, you are in the second half of the group, then you could be very hungry by the time you get back to Vienna. You best option by far, is to take something with you.
The Wienerwald is the Vienna Woods, an area of pre-alpine woodland just off Vienna, with plenty of places of interest, both historical and natural. It more or less covers the area bounded by the rivers Triesting, Gölsen, Traisen and Danube. it's a pristine, relaxing green area with beeches, oaks, hornbeams, pines and firs.
Fondest memory: There are pretty relaxed villages, stunning castles that look abandoned, ancient monasteries and churches, and several unground caves - one of which containing a large lake that can be navigated.
If you don't have transportation it possible to visit the vienna woods by taking part in a half day tour. One of the companies that does this tour is Vienna Sightseeing.
Fondest memory: My 2 guides are on this photo. I will always be greatful to them ! For showing me the best part of Austria that not many tourists could see.