This towering edifice, originally built in the early 12th century, was where Eleanor of Aquitaine celebrated her first (and ill-fated) marriage to Louis VII. While there have been additions and subtractions over the centuries (during the French Revolution it was used for storing animal feed), the main attraction is the soaring heights of the nave, with its 12th century Plantagenet Gothic arches that reach as high as 29m (95 ft.). The church is also known for its stunning organ, whose sculpted wood case has been declared a historic monument. Outside, are two beautifully sculpted portals: The North Portal, dating from 1250, shows the Judgment of Christ, while the Royal Portal (c. 1330) details the Ascension. Next to the church is the 15th-century Tour Pey-Berland, the cathedral’s belfry, which is separate because the vibrations from the huge bells could have damaged the cathedral if the tower had been attached. If you can handle climbing the 232 stairs, the tour offers a terrific view from the top.