On the last Wednesday in August this food festival is held, with the whole point to throw tomatoes at people.
I would suggest either booking a group tour for this or booking well in advance, accommodation is very limited. An option is to stay in Valencia and bus or train into Bunol, which is around 40kms.
August 27 Asakusa Samba Carnival Japan, Tokyo read more
August 28 Party at Europe’s biggest street party - Notting Hill Carnival United Kingdom, Notting Hill read more