Chahar Shanbeh Soori, an ancient Persian tradition celebrated on the eve of the last Wednesday before Persian New Year, Norouz (last Tuesday of March).
Bonfires are lit in public places and it is hoped for enlightenment and happiness throughout the upcoming Persian new year. People also bring variety of foods, tea, and they dance to Persian music.
Before the start of the festival, people gather brushwood in an open, exterior space (usually parks - bonfire permit may be required). At sunset, after making one or more bonfires, people jump over the flames, singing sorkhi-ye to az man, zardi-ye man az to, meaning "your redness is mine, and my paleness is yours".
Chahar Shanbeh Soori is one of the favorite festivals of all Iranians, young and old.