I spent two days in the fabled Hotel Del Coronado near San Diego and fell in love with the beach. It was one of the most incredible sunsets, in part because of the activity that was going on behind me at the time. My stay at the hotel was a splurge - I would recommend checking out the hotel, even if you can't afford to stay there. They have areas that non-guests can visit and the beach is right behind the hotel (public beach). The sand glistens as the sun catches what seem like little specks of gold. It's truly a magical place.