The streets were filled with these strings of fireworks. All throughout the day they were being set off in different locations, and they were LOUD.
This was one of the largest fallas
This one drew a huge crowd.
Fuses and fireworks were used to light them.
This was the largest, and was situated in the main square of the city
The streets were full of people. The festival lasted all day, and they didn't begin burning the fallas until
1 AM
The flames were controlled by the fire department spraying the surrounding buildings
Here are some other shots of Valencia: