What do Teddy Roosevelt, Marilyn Monroe and Diana, Princess of Wales, have in common? You guessed it. They've all taken rides on the Maid of the Mist—or rather one of seven Maids, which first launched its boats in 1846. This world-famous boat takes its passengers right into the heart of the Falls. You can catch the boat on either the American or Canadian side, with boardings every 15 minutes between April and the end of October.