The Great Cloudsdale Fire was a conflagration that did mostly superficial though incredibly confusing damage to about 4 square miles of Cloudsdale, Equestria. Though the fire was one of the largest non-magical Equestrian disasters of all time, the rebuilding that began almost immediately spurred Cloudsdale's development into one of the most populous and near exclusively pegasus inhabited Equestrian cities.
The fire started at about 9 p.m. on Sunday, October 8, in or around a small barn that not only managed to be suspended hudreds of feet in the air, but bordered the alley behind 137 DeHooven Street. The traditional account of the origin of the fire is that it was started by a cow that could somehow walk on clouds kicking over a lantern in the barn. Quillius Pennfife the Third, the Cloudsdale Republican reporter who created the cow story, admitted some years later that he had made it up because it seemed like the most plausible explanation for a bunch of clouds catching on fire.
The fire's spread was aided by the city's overuse of suspension of disbelief, somewhat shady physics, and strong winds from the southwest that carried flying embers toward the heart of the city. The city also made fatal errors by reacting in confusion and mild amusement instead of attempting to put the fire out. Given the fact that the entire city was made of clouds, mostly composed of water vapour, there was also a severe lack of any real fire department. Eventually the fire jumped to a nearby neighborhood and began to devastate a single cabbage stand and Marriongold Tibberson's manwich. Almost everything that crossed the fire's path was made of clouds, which is really weird if you think about it too much. After two days of the city burning down somepony got the bright idea to just make it rain and doused the fire. There were no injuries and nopony was left homeless since they just made some new houses out of clouds.
Because they're pegasi.
Seriously, use your head.
Questions About the Fire
Many questions arose after the fire, notably "How do clouds even burn?" and "Who will pay for my manwich?" After some time, everypony reached the consensus that maybe it was for the best that they all just kinda pretended that it never happened since the entire situation was somewhat ridiculous.
Everything with the exception of a lone cabbage stand. While Marriongold Tibberson made the claim that her manwich was large enough to be considered a structure, most historians disagree.