Possible Clues:

• 'The Painter of Sunflowers' setting
• Much-painted city in Provence
• 'Garden of the Hospital in ___' (1889 Van Gogh painting)
• Former kingdom of Provence
• French city where van Gogh died and painted a shitton of sunflowers, not necessarily in that order
• Where van Gogh worked, as his self-portrait endlessly shows?
• City of Provence
• Setting for van Gogh's 'The Yellow House'
• Name in many van Gogh titles
• Largest French commune by area