Cities in which a YAPC has been held, ordered by start date of the first
YAPC in that city, according to http://en.wikipedia.org/wiki/YAPC

  Pittsburgh     24 Jun 1999
  London         22 Sep 1999
  Montréal       13 Jun 2001
  Amsterdam      02 Aug 2001
  Saint Louis    26 Jun 2002
  München        18 Sep 2002
  חיפה           11 May 2003
  Ottawa         15 May 2003
  Boca Raton     16 Jun 2003
  Paris          23 Jul 2003
  הרצליה         26 Feb 2004
  Buffalo        16 Jun 2004
  Belfast        15 Sep 2004
  臺北市         26 Mar 2005
  Porto Alegre   01 Jun 2005
  Toronto        27 Jun 2005
  Braga          31 Aug 2005
  東京           29 Mar 2006
  Chicago        26 Jun 2006
  Birmingham     30 Aug 2006
  São Paulo      03 Nov 2006
  Houston        25 Jun 2007
  Wien           28 Aug 2007
  Москва         17 May 2008
  København      13 Aug 2008

In addition, workshops have been held in (among others);

  London
  Sankt Augustin
  Budapest
  København
  Bonn
  Arnhem
  Wien
  Paris
  Schorndorf
  Pisa
  Dresden
  Marseilles
  Stockholm
  Bochum
  Delft
  Oslo
  Pittsburgh
  München
  Boston
  Москва
  Bruxelles
  Lyon
  Ramat Efal
  Erlangen
  Minneapolis
  Київ
  Zagreb
  Albi
  Braga
  Владивосток
  Bratislava
  Мінск