Clue #1: Pom poms, mirrors, left foot and right foot divisions are big here
Clue #2: Could be an original spa
Clue #3: Troglodytes rather than fairies lived here way back when
Clue #4: This city held 10,000 people and is the largest of its kind known in the world
Clue #5: A Puerto Rican singer won a Grammy singing about this puzzle answer
Clue #6: The sunken cities will get you close
Clue #7: Was used in days of old to navigate