Roussillon is built on ochre-rich cliffs that give its houses vibrant shades of red, orange, and yellow. It was a major ochre extraction area until the mid-20th century. The Sentier des Ocres (Ochre Trail) allows visitors to explore the stunning colored cliffs. The village is one of France's most beautiful, with colorful streets and views to Mont Ventoux and the Luberon. The contrast between the red rocks and green pines is spectacular.