If you've been in denial that the winter season is upon us, this latest development should shake you out of it.
The McCormick Tribune Ice Rink in Millennium Park officially opened Friday.
Use of the rink is free, but skate rentals will cost you $10.
City officials said the rink draws more than 100,000 skaters annually. Click here for a schedule and holiday hours.
The rink remains open through mid-March.