Consecrated by Pope Urbain II in 1096, the Cathédrale St-André was built in the shape of a Latin cross with a unique nave that is over 124 meters long. One of the first Roman buildings in France, nothing remains today from the original construction except one of the nave's interior walls. The royal door dates back to the first half of the thirteenth century, while the apse and transept are from the fourteenth and fifteenth centuries. The marriage of Eleanor of Aquitaine with Louis VII, future king of France, was held in this cathedral in 1137. The organ is particularly noteworthy, and concerts are held regularly. The cathedral holds the title of Historic Monument in France, and is also inscribed as a World Heritage site by UNESCO since December 2, 1998.