The Cory Hall, Cardiff (opposite Queen Street Station) ... early 1970's ... a much smaller version of the Royal Albert Hall:

At this really intimate venue I had the privilege of seeing Sandy Denny & Friends. A wonderful venue and concert.
https://glamarchives.wordpress.com/2...rrace-cardiff/

Capitol Theatre, Cardiff (where Capitol Shopping Mall is) ... Oct 1971 ... biggest theatre/cinema in Europe at the time.

My first visit was seeing King Crimson on their Islands' tour. This vast cavernous venue was packed; excellent light show by Peter Sinfield and fantastic concert.

StT.
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https://en.m.wikipedia.org/wiki/Capi...eatre,_Cardiff