In Xanadu did Kubla Khan/A stately pleasure dome decree? Where Alph, The sacred river, ran/Through caverns measureless to man/Down to a sunless sea. From these it can be concluded that-

Kubla Khan wanted to build a pleasure-dome and his own in Alph

Kubla Khan wanted Xanadu to build a pleasure dome in Alph

Kubla Khan wanted Xanadu to build a pleasure-dome in the cavernsof Alph

Kubla Khan himself wanted to build a pleasure-dome in the caverns of the rivers Alph in a sunless sea