ranked number two, behind Melbourne). For four consecutive years (2009–2012), the human-resource-consulting firm Mercer ranked Vienna first in its annual "Quality of Living" survey of hundreds of cities around the world. Monocle's 2012 "Quality of Life Survey" ranked Vienna fourth on a list of the top 25 cities in the world "to make a base within" (up from sixth in 2011 and eighth in 2010).
The city was ranked 1st globally for its culture of innovation in 2007 and 2008, and 2nd globally (out of 256 cities) after Boston in the 2009 Innovation Cities Index, which analyzed 162 indicators in covering 3 areas: culture, infrastructure and markets. Vienna regularly hosts urban planning conferences and is often used as a case study by urban planners.
Each year since 2005, Vienna has been the world's number one destination for international congresses and conventions. Vienna attracts about five million tourists a year
