Like Sacsayhuaman (5)

I believe the answer is:

incan

(Other definitions for incan that I've seen before include "Imperialist of the past" , "Of an Andean civilisation overthrown by Pizarro in 1533" , "Relating to pre-conquest Peruvians" , "ancient civilization" , "Member of old Andean civilisation" .)

I've seen this clue in the USA Today.

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