In Kyiv, in Protasov Yar there is an unusual form of entertainment: Zorbing. This is when you are put into a large inflated ball that is rolled down the hill. The biggest advertisement of this kind of entertainment was made by Jackie Chan in "Armour of God" (video).
There are several types of descent: single, double, with water in a ball and without. Take comfortable clothes and socks. We went down one by one without water. The feelings are individual for everyone. As for me, I was a bit scared :)
A curious moment. Go up the hill to the right of the descent. When the ball with someone rolls down, you will hear a very loud breathing of the person inside, despite the fact that they are 30 meters far from you.
Getting there: From the Olympiiska metro station take a trolleybus #40 or a minibus #495 to Protasov Yar.