PTB's main site is situated in the northwest of the city of Braunschweig, in the district of Völkenrode.
PTB has been based in Braunschweig since 1947. About 1700 members of staff in nine divisions work at the 1 km² site; PTB's Presidential Board is located here.
Bundesallee 100, 38116 Braunschweig, phone: +49(531) 592-0
Getting to PTB in Braunschweig - by car, by train or by bus.
We have divided our large campus into individual sections which are marked with capital letters. You will also find these capital letters on the signs around our campus – so that you can find what you are looking for without going the long way round.
(Reference: Physikalisch-Technische Bundesanstalt/www.ptb.de)
You can download 
the aerial photo directly.
There is a book on the history of the research site in Braunschweig-Völkenrode, but it is unfortunately out of print. (Readers who are interested might find it in a library): Rolf Ahlers, Gerhard Sauerbeck (Ed.): Geschichte des Forschungsstandortes Braunschweig-Völkenrode. Braunschweig, 2003