| We also climbed to the top of two towers in Cadiz. The first one was the west tower of the beautiful Cathedral of Cadiz where we enjoyed a panoramic view of the city. The second one was the Tavira Tower. During the 18th century, Cadiz was known for its many watchtowers. There were 160 watchtowers in all. The Tavira Tower, being the highest, was the official watchtower of the town and port during this period. At the top of the tower we observed in a darkened room a �camera obscura� which had been used to observe the town and surrounding waters. With the use of a mirror and a magnifying lens, the images of the surrounding area were projected onto a white screen inside the darkened room. |
