What do Charlie Chaplin, Susan B. Anthony, Jack London and Thomas Edison (here’s a film he made of his adventure) have in common? They all ventured to the bucolic Marin County to take the E-ticket ride of the times — The Crookedest Railroad — eight-and-half miles of over 260 turns, from 2,571 feet to sea level, down Mount Tamalpais, which operated from 1896 to 1930. Today, this historical gem can be celebrated at the Gravity Car Barn. Our suggestion is to make the day of it, either hike or drive on a weekend, as the museum is usually open to the public from noon to 4pm on Saturday and Sunday. friendsofmttam.org<