Today the “Hill” is a beehive of energy and occupied by thousands of driven students seeking their education. This is the site of Santa Barbara City College. Most people have forgotten its earlier history as the hill where a grand “Castle,” owned and built by one of the county’s pioneers, Thomas B. Dibblee, stood. Where Montecito Street ends and Cliff Drive (Highway 225) begins is the entrance on the south side to that “Castle.” But before that, the site was also the location of four other historic venues: Indian burial grounds, a historic meeting point, a geological curiosity, and a Spanish redoubt…