While on a missions trip to India in 2018 we got to take a day and go to Agra to see the Taj Mahal! The drive was about 4 hours there and 4 hours back to Jaipur. I was rather surprised because while the Taj Mahal is prisitne, the surrounding area was anything but. It was very crowded and trash was everywhere in Agra.
You are not allowed to take any photos inside of the Taj Mahal, but it is beautiful. The marble and precious stones have been smoothed and shine in the sun. As a white woman, I had a lot of eyes on me and a lot of people would ask for my photo. (even if you may feel bad saying no, say no anyway. otherwise you will have 50 people lined up with their large families asking for photos with you.)