Horton Plaza Park
Easily recognized as the backdrop to NBC 7/39's street-side studio, this plaza is nicely landscaped with a unique water feature/fountain in the center.  The fountain in Horton Plaza was put here to celebrate the opening of the U.S. Grant Hotel, and has bas reliefs of Cabrillo (the Portuguese explorer who discovered San Diego Bay), Father Serra, and Horton. This park is located on Broadway between Third and Fourth Avenues.

see also: San Diego Walking Tours  &  http://blogdowntown.com/2008/08/3557-trip-to-san-diego-shows-the-value-of-planning