Great Wolf Lodge is a resort and outdoor waterpark of 30 acres (12 ha) located in Gurnee, Illinois near Six Flags Great America and Gurnee Mills. The resort is operated by Great Wolf Resorts. It had originally opened in 2008 as Key Lime Cove and was listed as the "Official Resort of Six Flags Great America". The resort is located about an hour north of Chicago and less than an hour south of Milwaukee.

Around 2007, the resort named CiyLime Cove was constructed. It opened the following year with a tropical themed water park.

Nine years later, in 2017, the hotel announced its closure. It was announced that it would be owned by Great Wolf Lodge and would have extensive renovations throughout the hotel. This ended the partnership with Six Flags Great America.

Renovations on the new Great Wolf Lodge finished in summer of 2018. The renovated hotel opened on July 1, 2018, featuring a forest and wolf theme. The water park expanded by adding water slides near the original slide complexes. The exterior was painted a brown and peach color and the MagiQuest game was incorporated throughout the park.

In April 2020, the hotel closed down during the COVID-19 pandemic to quarantine navy recruits. The hotel reopened on August 24, 2020, with temperature checks.

• Wiley's Waterpark – A water park with a variety of water slides and pools named after Wiley the Wolf, the mascot of Great Wolf Lodge.
• Rustic Ridge Climbing Wall – A 21-foot climbing wall.
• Howl in One Mini Golf – A mini golf game with nine courses.
• Northern Lights Arcade – An arcade with prizes and games.
• Olivers Mining Co. – Sand-sifting experience hunt for a variety of gemstones.
• Ten Paw Alley – Family-based bowling alley.
• MagiQuest – An interactive fantasy roleplaying game.

• Howler's Peak Ropes Course – An obstacle course elevated over Howl in One Mini Golf and Rustic Ridge Climbing Wall.

• Hungry as a Wolf – An Italian restaurant that serves pizza, pasta and more Italian food.
• Timbers – An American restaurant with burgers, salads and sandwiches.
• The Outpost – Bar with craft beers and signature cocktails.
• Campfire Kitchen – À la carte dishes that serves both breakfast and dinner.
• The Watering Hole – Located in Wiley's Waterpark, The Watering Hole sells poolside soft drinks, cocktails and beer.

• Barnwood – An American & bar restaurant with locally-sourced food and beverages.
• Ben & Jerry's – An ice cream shop.
• Dunkin' – A popular donut and coffee shop.

• Great Wolf Candy Company – A candy shop.
• Paddle Bay Outfitters – Swimwear shop.

• Camp H.O.W.L Kids Store – "The Great Wolf Kids" characters themed merchandising.
• Build-A-Bear Workshop – Chain company that sells stuffed animals.
• Buckhorn Exchange – Vacation souvenirs, gifts and other essentials.

• List of water parks
• Six Flags Great America
• Gurnee Mills

• Graham, Doug T. (June 22, 2018). "Chance the Rapper hits the waterslides at new Great Wolf Lodge in Gurnee". Daily Herald. Retrieved July 18, 2018.