Catherine shows us how to spot the differences between a seventeenth-century building and an eighteenth-century one in this introduction to the southern French city of Arles.

Catherine continues her tour of Arles by taking us through the city's narrow streets lined with old houses, which offer some nice shade during the hot summer months.

Arles is an interesting town to visit, well-known for its Roman amphitheater. At one point two hundred houses were hiding inside the arena itself.