Vienna (in German: Wien) is one of the most beautiful cities in Europe and provides highest quality of living. For many centuries it has been the capital of the Austrian-Hungarian empire giving us magnificent buildings like the Hofburg and the Schönbrunn and Belvedere palaces. Today, Vienna is the capital as well as cultural and economic center of the Republic of Austria and hosts major international organizations such as the United Nations, OPEC, and OSCE. Vienna is still regarded as the musical capital of Europe or even the whole world. It offers exciting concerts, operas and musicals, as well as impressive exhibitions. Enjoy the delights of Viennese cuisine, typical Viennese "gemütlichkeit" at cafés and Heurigen, or the green side of Vienna in the city's many parks. See Vienna's official tourist information website for more information.
At the end of February, when there are the first signs of spring and the first flowers in the city of Vienna, you will find perfect conditions for skiing in the mountains. By car you can reach Stuhleck, which is one of the most popular ski resort for skiers from Vienna, within 50 minutes from the conference venue. By public transport it takes longer. From the conference venue you take the tram train Lokalbahn Wien-Baden to Bahnhof Meidling (11 min) and then the train to Spital am Semmering (105 min). From there it is a ten minute walk to the ski lift. Skiing equipment can be rented there. There are also some coach services from Vienna during the winter season. Be aware that when there is nice weather and a weekend, it can be crowded. A famous spot for ski mountaineering is the Breite Ries on the Schneeberg.
There are five underground lines and more than 100 tram and bus lines operated by Wiener Linien, here is a map of fast connections. The conference venue has a direct connection with the city center by the tram train Lokalbahn Wien-Baden. The stop at the conference venue is Vösendorf-SCS (do not mix it up with Vösendorf-Siebenhirten, that is one stop to early), the final destination in the city center is just opposite of the Opera on the Ringstraße. During the rush hours there are trains every 7.5 minutes, later in the evening the interval can be 15 minutes. The last train in the evening to the hotel leaves at 23:42 at the Opera (timetable), the last train to the city in the evening leaves at 23:58 at the conference venue (timetable). The ticket machines inside the tram only takes coins and small bills, the ticket machines at most of the stops also take cards. Be aware that the stop for the conference venue Vösendorf-SCS is the first stop after the city border, therefore it is not sufficient to have a ticket only for the city of Vienna. At the stop Schedifkaplatz or stop Bahnhof Meidling you can change to the underground line number 6 and trains to the airport and to international trains (Österreichische Bundesbahnen).
The Vienna International Airport (VIE) (Flughafen Wien in German) in Schwechat is about 25 km away to the conference venue in the south-east of Vienna. There are direct trains from the airport to Bahnhof Meidling every 30 minutes. In between this interval there is a connection with one change using the Schnellbahn S7 at stop Rennweg (you change the direction there and the train leaves on the opposite side of the platform). At Bahnhof Meidling you take the exit Schedifkaplatz and the Lokalbahn Wien-Baden to the conference venue (see above).
You also can take a taxi to the conference venue. Cheaper will be a pre booked transfer service by AirportDriver where there is negotiated rate of Euro 40€ (enter the code "TU-Wien Konferenz Vösendorf".
First of all, do not use a car in Vienna, there is lot of traffic in the city and Vienna has an excellent public transport system. The conference venue itself is outside the city, therefore there is less traffic (on Saturday there is a lot of shopping traffic) and sufficient parking space. Use a car only, if you arrive per car or if you want to go to the mountains.