A group of people in Redland, Bristol spent seven hours building a 6ft igloo.
It started as a idea of 2 students, but as the day went on they were joined by friends, families and neighbours.
One person even spent the night in there!
They've decided to raise money for the charity 1625 Independent People, who provide shelter for homeless young people between the ages of 16 and 25 in Bristol and South Gloucestershire.
If you'd like to donate, the website address is www.justgiving.com/redlandigloo