On Nov. 9, the Legion of Honor began its 100th anniversary celebration with festivities including a cake picnic, screen-printing press and portrait station with the museum’s most prominent sculpture, a bronze cast of “The Thinker,” by Auguste Rodin (1904). A performance from the George Washington High School marching band ushered in the party with heavy drums and harmonic brass. As part of the Free Saturdays program, Bay Area residents delighted in free admission to the museum.