Some get an escort around part of the Capitol Building (6)
I believe the answer is:
senate
'part of the capitol building' is the definition.
(the US Senate in the Capitol in Washington DC)
'some get an escort around' is the wordplay.
'some' says the answer is hidden in the clue (some of the parts of the word are used).
'around' is a reversal indicator.
'etanes' is hidden within 'get an escort'.
'etanes' back-to-front is 'SENATE'.
(Other definitions for senate that I've seen before include "Roman state council" , "The upper house in parliament or oireachtas" , "Second house of Government" , "Upper assembly of US" , "Legislative assembly" .)