Sure, I'd be happy to help you plan your one-day itinerary in Agra!

Day 1:

8:00 AM - Start your day early by visiting the iconic Taj Mahal, one of the Seven Wonders of the World. The best time to visit the Taj Mahal is early in the morning when the crowds are less and the weather is pleasant.

11:00 AM - After exploring the Taj Mahal, head to Agra Fort, a UNESCO World Heritage Site. This fort was built in the 16th century and served as the main residence of the Mughal emperors.

1:00 PM - For lunch, head to Pinch of Spice, a popular restaurant in Agra that serves delicious Indian cuisine. You can try their famous butter chicken or biryani.

2:30 PM - After lunch, visit the Tomb of Itimad-ud-Daulah, also known as the Baby Taj. This tomb is a beautiful example of Mughal architecture and is often referred to as a draft of the Taj Mahal.

4:00 PM - Next, visit Mehtab Bagh, a beautiful garden located on the opposite side of the Yamuna River. This garden offers a stunning view of the Taj Mahal and is a great spot to relax and enjoy the sunset.

6:00 PM - End your day by visiting the local markets in Agra, where you can shop for souvenirs, handicrafts, and traditional Indian clothes.

I hope this itinerary helps you plan your one-day trip to Agra. Have a great time exploring this beautiful city!