I am researching plans for a trip to Rome next May, it will be my second trip to the city.
I am wanting a mix of re-visiting and seeing many sites I did not previously visit. I did see the Colosseum and Forum on my previous trip. I am looking at the options and toying with trying to get tickets of the Underground or the Attic (full experience tickets) but unfortunately, does not look like the Colosseum includes both special tours. Any opinions on either Underground or Attic?
Also, I am considering also including a (separate) visit to Domus Aurea since I will likely be in Rome over the weekend. Any thoughts of that experience? Worth it?