[kweks]

There are a few organisations that arrange tours. ( https://duckduckgo.com/?q=baikonur+cosmodrome+tour&t=h_&ia=w... )

You need ROSCOSMOS permission, and a double entry Russian visa (you typically fly to Russia (one entry).. fly to Baikonur, and then fly back to Russia.

From what I understand, the tour is quite near, and you can stay in the famous Sputnik hotel. You can also time.it right to be on site for a launch.

In terms of seeing the Buran/s, you cannot officially visit. You essentiallywalk on a straight line across the desert avoiding detection to get to the hangar. It's entirely a different type of adventure in itself.