Museo del Templo Mayor, Mexico City

They don’t allow water. Many museums do not allow water, but they will hold it for you. These people will not do that. Mexico City is at a high altitude and you need water. I went in while my wife had to wait outside to hold the water. I found that most of the good stuff could be viewed from the terrace which you can go on for free. I recommend you pass up paying admission to go see this place unless you are really really interested in Mayan history.

Really interesting place. Very well laid out with rooms for various different periods in history. Lots of information in English to help tourists (like me). Gives you a good appreciation for the various different Mexican cultures and influences. Overall, a great place to visit for 2 hours. One caveat - make sure you are not overcharged at the entrance. We were a party of 2 and he charged us for 3 people. He wasn't remotely apologetic and hadn't given us a receipt at the time so we were lucky we had internet to show him the card transaction. Entrance should be MXN 85 per person.