Possible Clues:

• 'The Night Cafe' was painted there
• Where some sunflowers were painted
• Man loses companion in French city
• City painted by Van Gogh
• Bizet suite 'The Girl From ___'
• City where "The Night Café" was painted
• Setting of Van Gogh's 'Bedroom'
• Setting of Van Gogh's 'Cafe Terrace at Night'
• It's on the Rhone delta
• France's largest city, by area