Fire and noise are central to the Las Fallas festival in Valencia, Spain.  Millions of revellers descend on the city each year to enjoy the amazing fallas --or monuments, fireworks and open-air music concerts. There are more than 300 fallas dotted around the city--works of art, constructed of wood, cardboard and other materials.

The origins of the festival began when Valencia’s carpenters celebrated spring by setting fire to their unused wood cuttings in a bonfire in the neighborhood square.

Today, constructing the fallas is a year-round process of fundraising, design, construction and camaraderie. 

All that work literally goes up in smoke marking the end of the festival. They will get torched late Tuesday, March 19, and the fires are expected to burn into the wee hours of the following morning.

Here is a look at some of the top ones.