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Personen gehen in die C3 Bibliothek hinein.

Visit C3

C3 is free of charge and open to the public during the opening hours of C3 library. Event times are announced in our upcoming events calendar. Whether for learning, reading, training and education, events or team work – we look forward to your visit!

Opening hours of the library

Our regular opening hours:

Monday – Tuesday9.00 – 17.00
Wednesday – Thursday9.00 – 19.00
Friday9.00 – 14.00

The library is closed on public holidays.

Additionally, the library will be closed on the following days in 2023/24:

Winter holidaysDezember 27th 2023 – January 5th 2024
Semester holidaysFebruary 5th 2024 – February 9th 2024
Easter holidaysMarch 25th 2024 – April 1st 2024
Summer holidaysJuly 8th 2024 – August 23rd 2024


C3 is located at Sensengasse 3 in Vienna’s 9th district next to the University of Vienna campus. You can get there by using tram lines 5, 33, 37, 38, 40, 41, 42 and metro lines U2, U6.


C3 premises are spread over three floors. All rooms, including a toilet, are wheelchair accessible and can be reached via ramp and lift. However, the lift is located outside our premises and requires one of our team to open the doors. We are happy to help and accompany you to the lift or show you the way to the particular rooms. Assistance dogs are welcome in C3. If you would like, please contact us before your visit so that we can make your stay as barrier-free as possible.