>It happens quite a lot in Europe where it goes through buildings.
The CERN high-energy physics laboratory (Meyrin site) straddles the CH-FR
border near Geneva. About half the site is in France, although all the
entrances are in Switzerland.
I seem to remember hearing that one of the cafeterias straddles the border,
and has to charge French taxes on one side, and Swiss taxes on another.
Unfortunately, whilst I know that detailed maps showing the border exist, I
haven't been able to find a sufficiently accurate one on the web.
Regrettably, I wasn't so interested in such things when I last visited :-(
I found this photograph of the main entrance, with the CH-FR border post in
the distance...
http://jonathan.rawle.org/gallery/2001/border.htm
Regards,
Kevin Meynell