By Laura Jones
Newsround Extra, St Petersburg
I had never been to Russia before and I was expecting it to be very cold but when we got off the plane and walked outside it was so much more freezing than you can ever imagine.
I had so many clothes on - scarf, hat and gloves and it was still really cold.
One million homeless kids in Russia
It was at that point I realised just how difficult life must be for the 30,000 children in St Petersburg who are homeless.
Russia is a country that has loads of problems. A lot of people don't have jobs and many people have a problem with alcohol.
This means that life at home is very difficult for lots of children. Many families don't have enough money to buy food and clothes for their kids so they end up having to beg.
Many parents are so drunk a lot of the time that they can't look after their children properly. This is why so many children end up living on the streets
And we wanted to find out what life was like for them.
Babies are often abandoned
We visited the only hospital in St Petersburg that helps homeless children.
It's called Tsimbalina and looks after children of all ages and tries to find them places to go and live.