Agra
What is there to say about Agra?
I only stayed for one night, sufficient to see the Taj Mahal and Agra Fort, and get the next night train out. While queuing at the Taj Mahal in the morning, I met a friendly guy, Max, from Hong Kong, and we visited both places together before splitting paths following a roof-top meal in Taj Ganj, over looking the Taj Mahal, in the afternoon.
The most memorable things were the ornate and intricate gemstones set in to the marble on the Taj Mahal, and the magnificently carved stonework on Agra Fort.