Coming from the north (Uzbekistan) this will be the first site to visit. I honestly did not enjoy visiting here even though the minaret is impressive to stand for long (including Mongolian invasion, earthquake). Most of the site is still under ground, some is still recoverable but it seems they don't want to and UNESCO is against it too.
You'll visit a mausoleum, the minaret, and more mausoleums as you pass through the area. While the first mausoleum is impressive and the minaret definitely is, overall it's not so great.
It will probably be the reason you are coming from Uzbekistan in the first place.