Oiran () were the courtesans of Edo period Japan. The oiran were considered a type of yujo () 'woman of pleasure' or prostitute. However, they were distinguished from the yujo in that they were entertainers, and many became celebrities of their times outside the pleasure districts. Their art and fashions often set trends among the wealthy and, because of this, cultural aspects of oiran traditions continue to be preserved to this day. The oiran arose in the Edo period (1600-1868). At this time, laws were passed restricting brothels to walled districts set some distance from the city center. In the major cities these were the Shimabara in Kyoto, the Shinmachi in Osaka, and the Yoshiwara in Edo (present-day Tokyo). These rapidly grew into large, self-contained 'pleasure quarters' offering all manner of entertainments. Within, a courtesan’s birth rank held no distinction, which was fortunate considering many of the courtesans originated as the daughters of impoverished families who wer