The Henry Vilas Zoo's Unique Dining Experience - with the Bears! Combine our healthy, tasty new food options with a completely one-of-a-kind setting, and you get the zoo's new Glacier Grille restaurant. The Glacier Grille is the only indoor restaurant in the US to look onto a polar bear exhibit! The Glaicer Grille's winter hours are 11:00am-4:00pm daily. Check out the Glacier Grille Menu and Winter Menu Try the new Glacier Grille - purchases help your community-supported zoo thrive!