You can ask the Lorentz center staff or when we’re not around :
+31 (0)71-512 33 00 (Taxi De Groot)
When you use your office phone: first dial 0 for an outside line.
Taxi pick up point: in front of the main entrance (see picture below).
In case you leave outside office hours, you can exit the building via the side doors with your keycard.
When you will not return to the Lorentz Center, you can drop off your keys
in the dropbox next to the sliding door at the side entrance.