Crossword clues for the word: TRANQUILITYBASE The word TRANQUILITYBASE has appeared as an answer to at least 6 crossword clues on different crossword puzzles. Crossword clues for TRANQUILITYBASE Showing 1 to 6 of 6 results Clue(s) Eagle touchdown site Eagle's place Famous landing site Landing site of 7/20/1969 NASA lunar outpost Where the Apollo 11 LEM landed