<P> A red - light district or pleasure district is a part of an urban area where a concentration of prostitution and sex - oriented businesses, such as sex shops, strip clubs, and adult theaters are found . Areas in many big cities around the world have acquired an international reputation as red - light districts . </P> <P> The term red - light district originates from the red lights that were used as signs of brothels . </P> <P> According to the Oxford English Dictionary, the earliest known appearance of the term "red light district" in print is in an 1894 article from the Sandusky Register, a newspaper in Sandusky, Ohio however, Google Books contains a few earlier sources, such as the Minutes of the National Woman's Christian Temperance Union at the Ninth Annual Meeting, published at the end of 1882 . </P>

Where did the red light district come from
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