Want to see the world's longest leash?
Here it is...
This is the Kerch Bridge.
It's 12 miles long, linking the Taman Peninsula of Krasnodar Krai in Russia and the Kerch Peninsula of Crimea with a four-lane highway and a two-way rail line.
That makes it the longest bridge in Europe, as well as one of Vladimir Putin's grandest achievements.
The contract for the bridge was awarded in 2015, just a year after Russia invaded Ukraine (the first time) and annexed Crimea. And it was finished in 2019 at a cost of $4 billion.
The project was a necessity, because without it, Russia would have no physical attachment to the Ukrainian peninsula at all. So any Russian traffic to Crimea would have to pass through Ukrainian territory.
For years it's been used by Russian tourists who like to visit Crimean beaches in the summer. But it's obviously a crucial military corridor as well.