What exactly is (was?) the Great Gate of Kiev?

Question

It's the name of final movement in Mussorgsky's 'Pictures at an Exhibition' (which I happen to be playing on my stereo right now)

But what exactly is this gate? Is it real, or was it ever?
Is it still around?

Answer 1

The Gate depicted in Mussorgsky's 'Pictures' was, apparently, never built. I didn't know this until I checked (but did know that all of Hartmann's pictures had been lost) :- see http://grotesmurf.madscience.nl/music/kieveng.htm

Answer 2

Apparently it refers to an entrance gate on the Old city of Kyiv (founded some 1500 years ago).

Check out this link:
http://www.infoukes.com/history/golden-gates/