Answer: rushmore

AnswerCrossword Clue
RUSHMOREIt's known for its big busts
RUSHMOREIt has four heads
RUSHMOREPeak in the Black Hills
RUSHMOREMount in South Dakota
RUSHMOREMountain of Washington, Lincoln, Jefferson, Roosevelt.
RUSHMOREMountain site of Gutzon Borglum sculptures.
RUSHMOREMount with presidents' heads
RUSHMOREWhere Washington is mounted?
RUSHMOREPresidential mount
RUSHMOREMount with presidents
RUSHMOREMountain with rapidly-done sculpture?
RUSHMOREPresidential Mount
RUSHMORE"North by Northwest" backdrop, briefly