The annual is taking place at the Boise Center.
Different rooms transport visitors to unique winter wonderlands.
The festival is open to the public until Sunday. It costs 7 dollars for general admission, 4 dollars for kids and seniors, and kids two and younger are free.
All of the proceeds from the event will go to the Saint Alphonsus Cardiac Rehabilitation Center.
The money will support the expansion of the exercise and wellness rehabilitation center for patients suffering from heart and lung disease.
"If somebody has had a heart attack or maybe a pulmonary condition they go in and the cardiac rehab unit helps them strengthen their heart, strengthen their body, nutrition, things like that," explained festival co-chair Gary Raney.
Cardiac Rehabilitation participants are less likely to have a second heart attack and on average live at least 7 years longer than patients who don't do therapy.