Backtrack along Calle Sacramento toward the city center to Torre Tavira. At 150 feet, this tower, attached to an 18th-century palace that's now a conservatory of music, is the highest point in the old city. More than a hundred such watchtowers were used by Cádiz ship owners to spot their arriving fleets. A camera obscura gives a good overview of the city and its monuments; the last show is a half hour before closing time.
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