An overnight Agra tour sounds like a great way to explore the city and its monuments. You should mention the benefits of staying overnight in Agra, such as avoiding the crowds and traffic, enjoying the nightlife and culture of the city, and having more time to visit the attractions. You should also mention the details of the tour, such as the accommodation, transportation, meals, and entrance fees included in the package. You should also highlight the main attractions and activities that are part of the tour, such as visiting the Taj Mahal at sunset and sunrise, exploring the Agra Fort and Fatehpur Sikri, and experiencing a cultural show or a cooking class.