Holy week in Spain is a religious event that takes place the week of Easter. It consists of lots of parades with costumes, floats, excitement, and celebration of the resurrection of Jesus.
The Pamplona Bull Run is when bulls race on the streets and then fight each other after.
Las Fallas in Valencia is a festival where many detailed paper sculptures are made and are later burned in bonfires. Only some are chosen to not be burned, and are selected to be put in the museum dedicated to sculptures from this event. This tradition started in 1784.
This is a tomato fight that occurs yearly in a town near Valencia. This tradition started when everyone started throwing fruit at each other during a parade in 1945.