B.M. Birla Planetarium is a large planetarium in Chennai providing a virtual tour of the night sky and holding cosmic shows on a specially perforated hemispherical aluminium inner dome. It is located at Kotturpuram in the Periyar Science and Technology Centre campus which houses eight galleries, namely, Physical Science, Electronics and Communication, Energy, Life Science, Innovation, Transport, International Dolls and Children and Materials Science, with over 500 exhibits. Built in 1988 in the memory of the great industrialist and visionary of India B.M. Birla, it is the most modern planetarium in India.