San Diego Zoo, San Diego - As humane and "natural" a zoo as you'll find anywhere, with a vast collection of rare species. Mono Lake - The blue waters of remote Mono Lake are prime bird-watching territory; it's also a spectacle in its own right. Joshua Tree National Park - The eerie "arms" of Joshua trees beckon visitors to explore this long-abandoned mining country. Hearst Castle, San Simeon - A million visitors a year now tramp through "Citizen Kane's" opulent unfinished home. Highway 1 - Thrilling drive along the US's west coast, with pounding Pacific surf as far as the eye can see. Yosemite National Park - Giant sequoias, towering waterfalls, the sheer face of Half Dome - your eyes will hardly get a rest. The streets of San Francisco - Get the flavor of the Beats in North Beach, flower power in Haight-Ashbury, and gay pride in the Castro.