This event can be defined as the greatest expression of public art that has ever been organised in our country, attracting a massive number of participants, with 250 activities being carried out for just one night.  The participation of citizens and of hundreds of institutions -such as private companies, areas of government, municipal departments and other public administrations- which all get together in favour of art in this great festivity that celebrates culture on the streets. An example of coexistence and team work carried out by a whole city in support of contemporary creation.