Hinduism, the Truth is not a sect of a faith or a man-made religion. The Cosmic Truth of Hinduism is non denominational and universal and its founder is unknown. However, ancient Rishis and Saints have nurtured and revived it into what it is today. Hinduism's basic concept is unique with its link to Cosmic Energy, its traditions and culture is also linked to nature. A diagram explaining the distribution of Cosmic energy is explained, is given in this book. Lord Shiva is the Cosmic dancer. It is depicted that Brahma is the creator, Vishnu the Preserver and Shiva is in charge of evolution, for easy understanding by the people. This book deals with speculations about the origin of Hinduism and its association with nature. The design and energy of the Hindu temple and how the energy is associated with the power of Yantras, and Chakras in the human body, mantras and their connection with sound waves, Solar system, and Time. Idol / Deity worship and rituals etc. The book covers the five Ishwarams temples of Shiva, Sakthi, Karthigeya, Vishnu, Kannagi in Sri Lanka, worshipped by Hindus and Buddhists. Hinduism had its origin in the Indus valley civilization. The word Hindu is derived from the Indus river and dates back to over 5,000 years or more. This book also touches the link between the Hinduism and Buddhism. Kannagi (Pathini) and her worship by Sri Lankan Tamils and Singhalese is also explained in the book.