As a public servicePark organizations offer free admission on a
rotating basis throughout the month.

First Tuesday
Reuben H. Fleet Science Center
Centro Cultural de la Raza
Model Railroad Museum
Natural History Museum

Second Tuesday
Museum of Photographic Arts,
Museum of San Diego History Veterans
Museum and Memorial Center

Third Tuesday
San Diego Art Institute San Diego
Museum of Art San Diego Museum of Man
Japanese Friendship Garden
Mingei International Museum

Fourth Tuesday
San Diego Air & Space Museum
San Diego Automotive Museum (last admission 3:45pm) 
San Diego Hall of Champions
House of Pacific Relations International Cottages
http://http://www.balboapark.org/calendar/detail.php?EventID=370