One of the best view of this cathedral.

the skeleton of the roof cathedral is build in concrete! Surprising structure!

Under the dome of the lantern tower, inside the cathedral of Coutances.

The underground cathedral, in the salt mine of Berchtesgaden.

The entrance to the underground cathedral is a slide 40 meters long which descends more than 12 meters.

Cathedral Saint-Gatien of Tours

On the curtains of the Cathedral of Chartres. A panel suggested not mount the parapet because it is too dangerous. And then?

View of the flaming style towers of the Cathedral from the tower lantern.

The Cathedral of St Gatien was built between 1170 and 1547. Its maximum height is 69m with a total length of 97m.

The Cathedral of the salt mine has more than 3000 sq. ft with 17 feet ceiling! More than 100 meters underground.

The flying buttresses of the cathedral of Meaux.