Getting caught in Baikonur is no joke, it's typically the FSB that respond. With that said, typically if you're not in active infrastructure, you'll "just" get booted out of Baikonur (or Russia, depending on their mood..)
Fun fact: another Buran sat in an abandoned lot in an Inner Sydney (Australia) suburb for many years.
That wasn't an actual Buran, it was a test vehicle used to test the handling of the aircraft for gliding and landing. https://en.wikipedia.org/wiki/OK-GLI
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.
but don't worry, elon will fix everything. if he can only get past the endless stream of 'boring questions' first..
Don't just fabricate nonsense. 5th sentence in the article:
"It's an active spaceport about 1,500 miles southeast of Moscow, still used today to send and retrieve astronauts from the International Space Station."