Seven specimens. About two and a half kilometres of the four point three kilometre circuit. The alphabet of late-medieval French urban defence, written between thirteen fifty-five and thirteen seventy under Pope Innocent VI and his successor Urban V, against the mercenary bands the Hundred Years' War had unmoored across France.
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Porte Saint-Roch: The Gate-Tower Typology

Boulevard Saint-Roch, southwestern wall. One of the seven gates retained after the fourteen seventy-nine to fourteen eighty-eight modifications, walled up in fifteen sixty-one during the French Wars of Religion, reopened after sixteen sixty-one, and rebuilt in eighteen sixty-five as part of the nineteenth-century restoration of the circuit.

Western stretch along Boulevard Saint-Roch toward Boulevard Raspail. The canonical specimen of the fourteenth-century curtain wall with intermediate quadrangular tower, machicolated parapet, and putlog holes for the wooden hoarding.

Place Crillon area, western corner toward the Rhône. One of the twelve original fourteenth-century gates, demolished in nineteen hundred during the same nineteenth and early twentieth century modernization that filled the original moat.

Porte du Rhône and the Châtelet bridge-tower at the Pont Saint-Bénézet. Round versus square tower typology read in one frame, where the river itself functioned as the moat.

Northern stretch where the wall ascends the Rocher des Doms, the natural rock outcrop on which the Palais des Papes sits. The fourteenth-century curtain meets the late-fifteenth-century polygonal tower and the gunpowder-era loophole retrofits of the sixteenth century.

Northeastern stretch between the Rocher des Doms and Porte Saint-Lazare. A surviving postern, set into the curtain wall as a single-person secondary door, used for discrete entry and as a sally-port for counter-sorties.

Boulevard Saint-Lazare, northeastern wall. The principal medieval entrance to the city, destroyed by the thirteen fifty-eight Durance flood and rebuilt under Urban V around thirteen sixty-four; a fortified avant-corps added in fourteen eighty-eight; restoration layer from the eighteen sixties.
Mid-morning to mid-afternoon on a weekday, ideally Tuesday through Friday outside peak July and August. The cut limestone of the western curtain reads best in raked side-light, so ten in the morning or three in the afternoon both work. The walk runs alongside busy boulevards, and weekend tourist traffic around the Pont Saint-Bénézet and the Palais des Papes peaks between eleven and three; starting at nine or walking after four lets the audio anchor the sightlines without crowd interference. Avoid right after rain on the Rocher des Doms approach, where the path can be slick.
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