Grain de Sable

This tiny chapel marks the spot where the last victim of the plague died in the outbreak of 1528. St Roch/Roque, a 14th-century Montpelier martyr, is particularly venerated for his intercessions against plague, and on behalf of bachelors, falsely accused people, and dogs. His Saint's Day is celebrated annually here on Aug 16.

The Citadel's main museum, chronicling the turbulent life and times of the city.

This is the city's principal and oldest church, mostly Romanesque and probably built in the 12th century but much modified over time. It has a prominent bell-tower and three naves, with the central nave containing the relics of St Boniface. At the front, note the loggia, the covered walkway for medieval bigwigs to discuss city business. Beneath this is a large water cistern, fed from adjacent buildings by aqueduct-buttresses spanning the streets. In 1980 they tried to turn the cistern into a conference centre but, strange to say, it filled with water every time it rained.