Los Angeles/Downtown Tours:
Various groups offer free or cheap walking tours of Downtown LA.
Downtown Art Walk: A free monthly self guided tour--and free walking tours, reservations required--held on the second Thursday of every month, to art galleries and museums in Downtown L.A.
L.A. Conservancy Walking Tours: See the grand Vaudeville/Movie theaters of the 20s and the impressive Art Deco office buildings in several easy to handle walking tours. Strongly recommended for those wanting to grasp a feel of LA's history. Reservations are strongly recommended.
Las Angelitas del Pueblo: This is a group of volunteer docents who give free tours of El Pueblo de Los Angeles to the public.
Raymond Chandler's Los Angeles In A Lonely Place bus tour: An occasional bus tour of sites downtown and in Hollywood from the films, books and lives of Raymond Chandler and his anti-hero Philip Marlowe. $58, includes snacks.
The Real Black Dahlia bus tour: A true crime and social history tour that intimately explores the last weeks of Elizabeth Short's life, asking not "who killed her?" but "who was she?" $58.
John Fante's Dreams of Bunker Hill bus and walking tour: An occasional bus and walking tour of sites downtown and in Hollywood from the life and work of novelist John Fante and his great fan Charles Bukowski, plus crime scenes from forgotten horrors of old Bunker Hill, Sonora Town and beyond. $58, includes snacks.