http://www.barcelonayellow.com/bcn-events/details/10-festes-de-la-merce-festival'
http://en.wikipedia.org/wiki/La_Merc%C3%A8
http://www.apartmentbarcelona.com/blog/2013/09/04/la-merce-barcelona-2013/
http://www.timeout.com/barcelona/features/128/festivals-events-in-barcelona
http://www.fest300.com/festivals/les-festes-de-la-merce
http://www.shortstay-apartment.com/barcelona/les_festes_de_la_merce.htm
http://www.lonelyplanet.com/spain/barcelona/travel-tips-and-articles/77332
http://www.gigapan.com/gigapans/142028
http://www.spanish-fiestas.com/festivals/festes-merce/
http://www.telegraph.co.uk/travel/picturegalleries/2602520/10-top-world-festivals.html?image=8