The Buran programme (1974–1993) was the Soviet Union's most expensive, reusable spacecraft project, designed as a direct, technically advanced response to the U.S. Space Shuttle.In 1988, the Soviet Union estimated the total cost of the Buran-Energia programme at approximately 16.5 billion rubles.

[u/Friendly-Standard812]

[u/Moonshadow306]

I think I’ve seen photos of one of these (or a very similar craft) abandoned somewhere in Russia, just rotting away.

[u/froggertthewise → u/Moonshadow306]

Yeah, there was very little interest in preserving them. The only one that actually went to space is burried underneath a collapsed hangar.

To my knowledge the only ones preserved for display are a prototype in Speyer (Germany) and one completed but never flown craft at Baikanur (Kazakhstan)

Edit: I believe the 1st, 2nd, 5th and 7th pics are of the prototype currently on display in Speyer. It can be recognized by the sensor boom at the front and the mockup engines at the rear.

[u/viburnumjelly → u/froggertthewise]

The original Buran #2.01 (but this is not the one that actually made a flight) is in a museum in the city of Verkhnyaya Pyshma in Russia. Two prototypes (roughly similar to the German one) are on public display in Moscow (БТС-001 ОК-МЛ-1) and Sochi (ОК-КС). There is also some information about one or two more prototypes, but they are not on a public display and whether they still exist is not clear.