Upvote:1
Having been there myself - and visited historical sites and museums - I can tell you that it is quite safe. I had no issues, but obviously you need to be careful ( alert to your surroundings) and apply commonsense (e.g., don't leave your bag unattended and don't display lots of jewellery). I found people there very helpful. The large police presence in the city centre might be intimidating at first, but, you'll actually feel safe in their presence. The only time I felt uneasy was when there were protests - because there was an election coming up. I really enjoyed my time in Mexico - the museums are absolutely fantastic, and I found the place and its people very endearing. Have a safe and happy trip!