At the Technion main gate the road forks, take the left fork  and continue 
straight forward about 1 km till dead end. 
The Building on your right is the Computer Science Dept building 
called "Taub"
(Colloquium lecturers can obtain entry persmission with car -
contact Hadas 04-8294343 heier@cs.technion.ac.il.
If you do not have entry permission park outside and continue 5-10 minutes walk).