Here, spreading along the shores of the beautiful bay, is the ancient Spanish town of San Diego, long sleepy, but lately enjoying a "boom" when it found itself becoming a popular watering-place. To the northward is the old Mission of San Diego, the first settlement by white men in California, noted for its prolific olive groves. In the town of adobé houses lived "Ramona" of whom Helen Hunt Jackson has written, and there are still preserved here the original church bells sent out from Spain to the colony. The outer arm of San Diego Bay is Coronado Beach, a narrow tongue of sand, stretching twelve miles northward, and ending in spacious expansions known as the North and South Beaches. Upon the South Beach is the famous watering-place of Coronado, with its great hotel alongside the ocean, the tower commanding an extensive view, and its spacious surrounding flower-gardens being magnificently brilliant. There are Botanical Gardens, a Museum and an interesting ostrich farm, with railways for miles along the pleasant shores, and at Point Loma are the lighthouses guarding the entrance from the sea, the uppermost, elevated five hundred feet, being the highest lighthouse in the world. Down near the Mexican boundary is the suburb of National City, surrounded by olive groves, and the visitors sometimes cross over the border to visit the curious Mexican village of Tia Juana, a name which being freely translated means "Aunt Jane." Extensive irrigation works serve the country around San Diego, and the great Sweetwater Dam, ninety feet high, closing a gorge, makes one of the largest water reservoirs in existence.