Black Rock City is what Burning Man participants call their temporary dwelling in the desert. Each year it is rebuilt— a nurturing place for the simultaneous release of the creative energies of thousands— and then it is taken down and the playa meticulously cleaned by those same participants, leaving once again only the windswept lake bed.
As this annual ritual repeats, the layout of the city itself has evolved. Below I have collected an example map from each year of Burning Man from 1998 onwards. (If anyone knows of maps from previous years, I would love to include them!)
Each map is linked to the source page, which may have a much larger version.