But why?

The Russians have not invented the wheel here. In the past Ukraine has displayed Russian military hardware that had been captured by the Ukrainian army.

But for the Russian authorities, this exhibition has, I believe, several key objectives.

The first is to reinforce the Kremlin's narrative that, in Ukraine, Nato - and the West as a whole - are waging war on Russia. The aim here is to demonise the West yet further in the minds of Russians.

In reality, it was Russia that invaded Ukraine: something Western leaders had urged Moscow not to do. It was President Vladimir Putin's personal decision to launch what Russia still refers to as the "special military operation" in Ukraine.

With supplies of arms and ammunition, the West came to Kyiv's defence. It does not seek to destroy Russia, despite what Russian officials may claim.

Then there's the historical symbolism.

Right now Victory Park is ablaze with red flags commemorating the upcoming Victory Day, the 9 May national holiday which marks Hitler's defeat.

The venue for this exhibition (a World War Two memorial) and the timing (ahead of Victory Day) feed that other official narrative I mentioned earlier: the one claiming a link between World War Two and the war in Ukraine.

But there's also a large element of gloating about this exhibition. Regarding the war in Ukraine, the Russians appear increasingly confident, despite the recent $61bn (£49bn) package of US assistance to Kyiv. Moscow believes it now has the initiative on the battlefield.

Russia's main message is written on a big sign beside the war trophies.

It reads: "Our victory is inevitable."