Gurnee in Lake County, Illinois — The American Midwest (Great Lakes)

Demon

Six Flags Great America 50

Photographed by Sean P. Flynn, June 19, 2026

1. Demon Marker

Inscription. Demon began its run at Six Flags Great America on May 29, 1976, opening as Turn of the Century, a custom Arrow Dynamics coaster featuring two airtime hills and a pair of corkscrews. In 1980, the ride underwent a significant transformation: the airtime hills were removed, two vertical loops were added, the track was repainted black, and new theming elements were installed to support its new identity as Demon.

The reimagined Demon quickly became known for its sequence of back-to-back loops, illuminated tunnel, and double corkscrew finale, elements that helped establish it as one of the park's quintessential classic thrill rides. Today, Demon continues to operate in the County Fair section, maintaining its legacy as a standout piece of Arrow Dynamics history that has thrilled guests for nearly five decades.

Erected 2026 by Six Flags Great America.

Topics. This historical marker is listed in these topic lists: Entertainment • Parks & Recreational Areas. A significant historical date for this entry is May 29, 1976.

Location. 42° 22.004′ N, 87° 56.093′ W. Marker is in Gurnee, Illinois, in Lake County. It can be reached from

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Six Flags Drive 0.7 miles south of Grand Avenue (Illinois Route 132). The marker is to the right of the entrance to the Demon ride at Six Flags Great America. Touch for map. Marker is at or near this postal address: 1 Great America Parkway, Gurnee IL 60031, United States of America. Touch for directions.

Regionally, this marker is in Greater Chicago.

It is also in the American Midwest

and on the Great Lakes.

Globally, it is in North America,

the Western Hemisphere,

the Western World,

and the Anglosphere.

Historically, it finds itself in what was once the territory of the Mississippian Culture

and also the Northwest Territory.

Other nearby markers. At least 8 other markers are within walking distance of this marker: Hometown Park (within shouting distance of this marker); a different marker also named Hometown Park (within shouting distance of this marker); The Lobster (within shouting distance of this marker); Kiddieland Amusement Park 1929-2009 (about 400 feet away, measured in a direct line); The Little Dipper (about 400 feet away); The Wooden Coasters of Six Flags (about 400 feet away); Six Flags History of Resurrected Rides

Photographed by Sean P. Flynn, June 19, 2026

2. Demon Marker

The marker is next to the ride's entrance.

(about 500 feet away); a different marker also named The Little Dipper (about 500 feet away). Touch for a list and map of all markers in Gurnee.

More about this marker. This is one of several historical markers erected by Six Flags Great America in honor of the park's 50th anniversary. The park opened as Great America on May 29, 1976.

Regarding Demon. Arrow Dynamics went defunct in 2002.

Also see . . .
1. Demon: This Demon Lives to Hear You Scream. From the Six Flags website. (Submitted on June 20, 2026, by Sean P. Flynn of Oak Park, Illinois.)

2. Coasterpedia: Arrow Dynamics.

Excerpt: "During its peak, Arrow Dynamics was responsible for some of the biggest and most significant advancements in the roller coaster industry. Innovations include one of the first tubular-tracked steel coasters, Matterhorn Bobsleds at Disneyland Park, the first modern inverting roller coaster, Corkscrew at Knott's Berry Farm, the first hypercoaster, Magnum XL-200 at Cedar Point and the world's first 4th-Dimension coaster X at Six Flags Magic Mountain. Arrow Dynamics had a monumental and lasting impact on the roller coaster
Photographed by Sean P. Flynn, June 19, 2026

3. The Demon's opening incline
industry."

(Submitted on June 20, 2026, by Sean P. Flynn of Oak Park, Illinois.)

The Demon's corkscrew image. Click for full size.

Photo by Jonrev (public domain), via Wikimedia Commons, June 8, 2007

4. The Demon's corkscrew

Credits. This page was last revised on June 20, 2026. It was originally submitted on June 20, 2026, by Sean P. Flynn of Oak Park, Illinois. This page has been viewed 7 times since then. Photos: 1, 2, 3, 4. submitted on June 20, 2026, by Sean P. Flynn of Oak Park, Illinois.