This is in Baarle, a village in B AND NL with a curious demarcation. Sorry, the Wiki-article is not available in English:
http://de.wikipedia.org/wiki/Baarle
But the map of the boundary lines is very obvious:
http://de.wikipedia.org/w/index.php?title=Datei:Baarle-Nassau_-_Baarle-Hertog-de.svg&filetimestamp=20080921075433
In Europe there are a lot of curiosites like that, caused by the often confusing history. I still remember, what a teacher has told me in my school-times. There is only one single boundary line in Europe, which was made on the table with a foot rule: dividing the former Ostpreußen between Poland and the Oblast Kaliningrad (formerly USSR, no Russia):
http://en.wikipedia.org/wiki/East_Prussia
Here lists of national exclaves and enclaves:
http://de.wikipedia.org/wiki/Liste_der_Exklaven_und_Enklaven and a bit different, the English version:
http://en.wikipedia.org/wiki/List_of_enclaves_and_exclaves
A lot of them were/still are in Europe. Oh, rjluna2's pic is used as decoration there
The straight demarcation in America causes a few funny sitiations, too.
Like this US-village without a connection to the US mainland:
http://en.wikipedia.org/wiki/Point_Roberts,_Washington There I've bought in 1988 the US rural postbox, which is still hanging at my parents' garden fence. We walked there on foot, because my Canadian friends are living only 200 meters from the border.