For me, it has always been something mysterious that I associated with hiding under my desk during safety drills in school. That is what happens when your childhood is spent under the shadow of the Cold War.
I certainly was not prepared for the grandeur and beauty I saw when I arrived there, even though I had seen pictures in books and movies. The Kremlin is also a UNESCO World Heritage Site.
Here are only a select few of the buildings in the Kremlin:
The tall Poteshny Palace, constructed 1652
The Arsenal on the left (with a view of three of the towers) constructed and reconstructed, twice, 1702 - 1828
A Soviet Era star on a tower
The Soviet Era State Kremlin Palace, where we saw a ballet. Possibly the cleanest building, inside, that I have ever seen.
The Senate Building, built 1776-1778
Gardens, not what I expected to see here, but lovely and understandable in the grand design
The Tsar's Bell, all 200 tons of it. The broken piece is on the other side swamped by children looking at it.
Soldiers marching in front of the Great Kremlin Palace, built 1849
A view across the Moskva River from inside the Kremlin walls
Tolkien Bonus: K is for Khazad-dum, the greatest of the Dwarf-halls and the home of Durin's folk. Its Elvish name was Moria.