As reported in the LATimes some museums that are offering a free day as the PST exhibitions conclude.
Museums offering free admission on March 31st include
American Museum of Ceramic Art
Art, Design & Architecture Museum, University of California, Santa Barbara
California African American Museum
Chinese American Museum
Eames House Foundation
Fisher Museum of Art, University of Southern California
The J. Paul Getty Museum
The Grammy Museum
LAND (Los Angeles Nomadic Division)
Los Angeles County Museum of Art
Mingei International Museum
ONE National Gay and Lesbian Archives (West Adams and West Hollywood)
Pacific Asia Museum
Palm Springs Art Museum
Pasadena Museum of California Art
Pomona College Museum of Art
Santa Barbara Museum of Art
Scripps College, Ruth Chandler Williamson Gallery
Vincent Price Art Museum, East Los Angeles College
the Getty has a free admission policy, however parking is not ($15).