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Cádiz' beautiful yellow-domed cathedral is an impressively proportioned baroque-neoclassical construction, best appreciated from seafront Campo del Sur in the evening sun. Though commissioned in 1716, the project wasn't finished until 1838, by which time neoclassical elements (the dome, towers and main facade) had diluted architect Vicente Acero's original baroque plan.

With the same ticket you can check out religious treasures at the Museo Catedralicio, just east. You may be able to climb the cathedral's Torre de Poniente, although it was closed indefinitely at the time of research.