La Tomatina / Spain, Buñol

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La Tomatina is a food fight festival held on the last Wednesday of August each year in the town of Buñol in the Valencia region of Spain. Tens of metric tons of over-ripe tomatoes are thrown in the streets in exactly one hour.
Approximately 20,000--50,000 tourists come to find out more about the tomato fight, multiply by several times Buñol's normal population of slightly over 9,000. There is limited accommodation for people who come to La Tomatina, and thus many participants stay in Valencia and travel by bus or train to Buñol, about 38 km outside the city. In preparation for the dirty mess that will ensue, shopkeepers use huge plastic covers on their storefronts in order to protect them. They also use about 150,000 (kg) tomatoes, just about 90,000 pounds (en.wikipedia.org/wiki/Tomatina).