The city council givers licenses to sell things at El Rastro. I guess you should go to the Junta Municipal de Centro. But I think they don't give licenses anymore (there are already many stalls).

Regards,

Antonio

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The best tips from your favourite hostal in Madrid.
Hostal Chelo at http://www.chelo.com

[This message has been edited by Antonio (edited 09-02-2000).]