Hundreds of captured Russian soldiers, conscripts, and mercenaries are held in these gritty buildings - one of 50 sites around Ukraine where they are detained.
The crump of Ukrainian air defences could be heard in the distance as we were led into a basement, to be met with the sight of dozens of prisoners taking shelter from the Russian attack.
Prisoner exchanges have become a regular feature of this war and for Kyiv it is crucial that they continue. Ukraine said this month it had secured the release of 1,762 men and women so far in prisoner swaps. These are highly sensitive operations, often taking months to arrange.
Under the Geneva Conventions, prisoners of war must not be paraded or exposed to the public. บาคาร่า66
We were allowed to approach who we wanted and asked for their consent. But the guards were with us wherever we went and these men were unlikely to have been speaking freely.