Are the seven man-made wonders of the world on the world heritage sites list?

The Seven Wonders of the Ancient World are not included on the UNESCO World Heritage Sites list as they were all constructed before the modern concept of heritage sites was established. However, some of the remaining structures, like the Great Wall of China and the Colosseum, are recognized as World Heritage Sites. UNESCO primarily focuses on sites that have significant cultural, historical, or natural importance in their current form.