Alpha World Cities I've Been To

• Brussels (2007)
• Chicago (2009)
• Dublin (2004)
• London (2009, 1999)
• New York City (2008, 2010)
• Paris (2007 2003)
• Toronto (2002)

from Globalization and World Cities Study Group and Network 2008 list at https://en.wikipedia.org/wiki/Global_city