The Institute of Theoretical Computer Science is situated in the building CAB, within 15 minutes walking distance from Zurich Main Station.
CAB and CNB are the main buildings of the Department of Computer Science. The department has offices on floors E through J in CAB and on floors D through H in CNB. Both buildings are open from 6:30 am to 7:00 pm.
Buildings CAB and CNB at Universitatstrasse 6, CH- 8092 Zürich
You will find more detailed information at the location web page of the Department of Computer Science.