We got lost and could not find the meeting point.
The guide called me to clarify where we were, and gave us the wrong route, when asked to send a point, she said she could not, and as a result, we went in the wrong direction.
In the 21st century, a person using a cell phone cannot send a location. Ridiculous!
After a while, she called again and said in a rude manner that they were leaving soon and not going to wait for us anymore, but still sent the point where to go, so we had to walk back for 10 minutes because of wrong the first direction.
When we arrived at our destination, it was in the middle of the park, and no one was over there.
There was no one to answer my calls. I called several times and no one answered.
This is not an acceptable attitude.
In the end, we were never given the tour. Terrible experience. Therefore, I've demanded my money back in full.
So, you can look at Harvard by yourself. There is nothing for what you have to pay $20. Nobody gets you inside. But outside everything is free. But some history you can google it.