Open Secret and the Rainbow Cultural Center offer over 800,000 spiritual, metaphysical books, new and used, and the finest and largest collection of Tibetan Thangkas in Northern America. Come visit our universal Temple curated with statues, sculptures, paintings, and sacred items from around the world. For over 33 years, within the 4800 sqft. of Open Secret a cultural experiment has been unfolding: a space in the heart of San Rafael consecrated to ageless wisdom, beauty, and sacred leisure. If the walls of Open Secret could speak you would hear a choir of songs, prayers, ceremonies, and dances, spiritual courses and classes devoted to the sacred ways of many religions and mystical understandings that were performed here over the years.