In Madrid, check out this link
http://www.guiadelocio.com/madrid/teatro/buscateatro/index.jsp I guess you will enjoy Teatro de La Comedia
(
http://www.guiadelocio.com/madrid/teatro/buscateatro/resultado_teatro.jsp?idRecinto1 =3075 ). They only play clasic theatre (Calder´on de la Barca, Lope de Vega, etc).
At summer, there are open air theatre at La Muralla Arabe (just beside the Almudena Cathedral).
There are also well known theatre festivals such as the one in Almagro (Ciudad Real).
Regards,
Antonio
PS: I have very few knowledge about theatre, so come on, post your suggestions here!!.
------------------
The best tips from your favourite hostal in Madrid.
Hostal Chelo at
http://www.chelo.com [This message has been edited by MadridMan (edited 06-26-2000).]