This is probably one of the demos I do the most, as not everyone is able to travel to see one of the actual Azure datacenters.
Install the DATACENTER Virtual Tour application by typing “Microsoft Virtual Datacenter” into the Windows STORE app on your PC or laptop.
Also you can install from https://www.microsoft.com/en-US/store/apps/Microsoft-Virtual-Datacenter-Tour/9WZDNCRDRT87
The main Microsoft Datacenter page has some extra info and links:
There is also a YouTube video: https://www.youtube.com/watch?v=zXsoygN_v7A