"Remove snow from the top of all houses, businesses, municipals, and trees. Remove lights from all houses and decoration trees in your city! Come spring time, March 20th 2011, the snow will melt."
The Remove Snow Top is a theme that costs 
500 Coins to remove Snow Top. This will revert back all the buildings back to normal instead of covered with snow.
It was first available during the Winter Event (2010). If you didn't buy this option, the snow melted on April 7th, 2011.