The Pierre de Couhard is a strange object: a 27-metre pyramidal mass of Roman masonry on the hillside above Autun's Roman theatre, standing alone on the ridge with wide views over the town. It was almost certainly a funerary monument — built to mark an important grave — but whose grave, and exactly when it was built, remains unknown.
The Atlas Obscura notes its resemblance to a termite mound: it has lost its original smooth limestone facing, leaving a rough rubble core, which gives it an organic and slightly uncanny appearance against the sky. It is the largest surviving Roman funerary monument in France. A steep walk uphill from the theatre, but the hilltop location and the view over the ancient city are worth it.