Where is the Global Assembly Cache?

I recently had to install some assemblies into the Global Assembly Cache so I needed to figure out where to put my assemblies in the GAC!

Interestingly enough, there are 2 locations for the Global Assembly Cache:

• For .NET Framework 2.0 and 3.5, this is the location: C:\Windows\assembly
• For .NET Framework 4.0 and. 4.5, this is the location: C:\Windows\Microsoft.NET\assembly

In the case of .NET Framework 4.0 and 4.5, there are x86 and x64 subfolders.  In addition, when installing assemblies into the GAC, you need to use the appropriate version of gacutil.exe as noted here: http://samirvaidya.blogspot.com/2016/02/where-is-gacutilexe.html