Something to see in the Capitol and tour around (7)

I believe the answer is:

rotunda

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'something to see in the capitol' is the definition.
I can't judge whether this defines the answer.

'and tour around' is the wordplay.
'around' indicates anagramming the letters.
'and'+'tour'='andtour'
'andtour' anagrammed gives 'ROTUNDA'.

Can you help me to learn more?

(Other definitions for rotunda that I've seen before include "Round building or hall" , "Circular building with a dome" , "Round domed room" , "domed hall" , "Round domed building" .)

I've seen this clue in The Times.

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