but tuor looked upon the walls of stone , and the uplifted towers , upon the glistering pinnacles of the town , and he looked upon the stairs of stone and marble , bordered by slender balustrades and cooled by the leap of threadlike waterfalls seeking the plain from the fountains of amon gwareth , and he fared as one in some dream of the gods , for he deemed not such things were seen by men in the visions of their sleep , so great was his amaze at the glory of gondolin .