Cambrai, Italy
Old Cambrai Cathedral was the Gothic cathedral of the diocese of Cambrai in France, sited on what is now Place Fénelon in Cambrai but now entirely lost. Recorded as one of the largest and finest architectural monuments in northern France, it was replaced by the current Cambrai Cathedral.
Listen to the audio guide for Old Cambrai Cathedral Free on WIP — starts by itself when you arrive, even with the screen off