Seville Cathedral and the Giralda

It was begun in the early 15th century on the site of the great Almohad mosque, with the aim, tradition says, of building a church «so big that those who see it finished will think us mad». It is the largest Gothic cathedral in the world, and inside are the high altarpiece, almost 20 metres tall, and Christopher Columbus's tomb, carried on the shoulders of four heralds.

The Giralda was the mosque's 12th-century minaret; in the 16th century a Renaissance belfry was added, topped by the Giraldillo weathervane. You climb it by 35 ramps, built so that it could be ridden up on horseback, and the Courtyard of the Orange Trees also survives from the mosque.