Sentence:  The miracle of democratic America comes home to one most strongly only when one has <WSD>seen</WSD> the endless Great Plains of the Midwest ; the sky-reaching peaks of the Northwest mountains ; the smoke-filled , art-filled , drama-filled life of the great cities of the East ; the lush and historic charm of the South . 
Meaning of the word marked with <WSD> tags:  go to see a place, as for entertainment