Tango festivals and congresses
Tango dance and tango music originated in Buenos Aires, Argentina and Montevideo, Uruguay, and spread to the rest of the world soon after.
Early tango was known as tango criollo, or simply tango. Today, there are many tango dance styles, including Argentine Tango, Uruguayan Tango, Ballroom tango (American and International styles), Finnish tango and vintage tangos. What many consider to be the authentic tango is that closest to that originally danced in Argentina and Uruguay, though other types of tango have developed into mature dances in their own right.
Source:
http://www.festivalsero.com/style/tango-33
Tango events in May 2013
24 - 27 May Edinburgh International Tango Festival (Edinburgh, United Kingdom)
Tango events in June 2013
13 - 16 Jun FestivalitoDelMar (Brussels, Belgium)
Tango events in July 2013
5 - 7 Jul Salsa Festival Frankfurt (Frankfurt am Main, Germany)
7 - 13 Jul 12th International Taboe Tango Camp (Austerlitz, Netherlands)
11 - 14 Jul Youth Dance Festival (Aguadilla, Puerto Rico)
16 - 28 Jul 2nd International Tango Meeting (Alghero, Italy)
Tango events in August 2013
1 - 4 Aug Summer Intensive Seminar (Berlin, Germany)
7 - 11 Aug 5ème Festival International Tango (Nice, France)
23 - 25 Aug Weekend for Tango Lovers (Stockholm, Sweden)
Tango events in September 2013
4 - 8 Sep Tangoworld (Fivizzano, Italy)
11 - 15 Sep Zango Festival (Haarlem, Netherlands)
12 - 16 Sep Salsa Festival International de Marrakech (Marrakech, Morocco)
19 - 22 Sep Tucson Tango Fall Fest (Tucson, AZ, United States)
25 - 30 Sep Tango at Sea Festival - TASF (Barcelona, Spain)
Tango events in October 2013
25 - 27 Oct Tangosutra (Washington, DC, United States)
Tango events in November 2013
27 Nov - 1 Dec Ankara Tango Carnaval (Ankara, Turkey)
* The highlighted events in this list are dedicated to Tango, others feature it as an additional style.