Vertigo scuppers me. A view like this is a welcome change and whilst I admire your sangfroid, I can't imagine me meeting vertigo like this and retaining much sanity.
@maggiemae The roof in the foreground is the roof of the nave of the Basilica of Notre-Dame de Roncier which dates from the end of the 12th C - the buildings clustered around it were mostly built in the 17th C