This Telescope is one of the first you will see on the scenic drive up Highway 118.  Completed in 1968 with the help of NASA for a cost of $5 million, it was then the third largest in the world.  One of the interesting projects it was involved in was using a laser to measure the distance to the moon by reflecting light off of mirrors left on the moon by Apollo Astronauts.  The tour takes you up the mountain and provides a walk through of the telescope, and a display of its history and powers.