AIRPLANE:

Airport Tegel (TXL):
best connection: Taxi (10 min.), or
- Bus TXL to station "Rathaus Tiergarten",
  crossing the road and then
  Bus M27 to station "Wiebestrasse" (30 min.)

Airport Tempelhof (THF):
- Underground U6 (direction "Tegel"),
  changing at "Stadtmitte" to U2 (direction "Ruhleben"),
  leaving at "Zoologischer Garten", see "TRAIN"

Airport Schönefeld (SXF):
- Train "Regionalexpress (RE)"
   to "Zoologischer Garten" (best, 30 min.) or
- Suburban line (S-Bahn) to "Zoologischer Garten"
  (second best, 50 min.)
- see "TRAIN"

TRAIN:
- always to station "Zoologischer Garten".
  best connection from there: Taxi (10 min.), or
- U9 (direction  "Osloer Strasse",
  changing at "Turmstrasse" to Bus M27 (direction
  "Jungfernheide") to station "Wiebestrasse" (20 min.)

CAR:
From all directions to highway exit Beusselstraße,
then over Beusselstr. to Kaiserin-Augusta-Allee.
Near "Toyota" take the entrance or use the
entrance Wiebestr. Use the parking deck at the
top of the building. Optronik is in "Turm3", first floor.