The city of Merida in Yucatán, Mexico, in 2011 was named "City of Peace" chosen among 99 other cities around the world. It is the host of the second edition of Effetto Biennale in March 2012 in the Museo de la Ciudad de Merida.


The Florence Biennale chose the city of Assisi, a city that has always been the City of Peace, as the venue for the first edition of Effetto Biennale. The exhibition took place in the prestigious Palazzo Vallemani in the center of the city.