Exploring Valencia during the Fallas Festival

While we were planning our trip to Spain, we decided to visit Valencia after our stays in Madrid and Alarcon. While looking up hotels, we were oddly surprised by how expensive the rooms were for a random night in March. Upon further investigation we discovered that the dates we had chosen fell during the Fallas Festival. Upon even further investigation of what the Fallas Festival was, we decided to extend our stay by a day to see it through to its conclusion. What is the Fallas Festival you may be wondering?