Starting from 1911 until 1920, John A. Miller was a consultant to the Philadelphia Toboggan Company (PTC), which had started building and operating roller coasters as concessions at amusement parks and boardwalks. The world’s tallest roller coaster in 1917 came from this collaboration, where John A. Miller designed the Giant Coaster at Paragon Park, and PTC built it. Located south of Boston, MA, near the Ocean, the ride stood 98 feet tall and was a side-friction design with a double out and back track layout. Paragon Park suffered some dramatic fires that lead to intensive modifications on the Giant Coaster. The first one happened in 1932 and lead to a dramatic redesign of the roller coaster.
Herbert P. Schmeck had helped construct the original coaster, and at that time, he was called on to rebuild the unfortunate ride on a sensible budget. The extensive initial double and back configuration and the massive side-friction configuration were too expensive to rebuild. He remade it as a simpler out and back with a dramatic double helix finale that used modern (for the time) PTC trains equipped with upstop wheels.
The ride suffered another fire in 1963 that destroyed the station, trains, double helix, and the bottom part of the lift hill. John C. Allen, a student of John A. Miller, was tasked with rebuilding the ride during his time as PTC president. The park asked him to restore it as an exact copy of Herbert P. Schmeck fantastic layout, but it was again too cost-prohibitive. The compromise was a new approach to the plan before the twin airtime hills that were destroyed. Brakes were mounted on that curve along with a new station. The last part of the puzzle was found at Forest Park Highlands Amusement Park in St. Louis, MO. The Comet roller coaster was also severely damaged by fire and would not return to service. The trains were spared, and Paragon Park purchased those trains, which dated back to 1941, for the Giant Coaster. As an interim measure, until the Comet trains were ready, National Amusement Devices trains from the Crescent Lake (Providence, RI) Zephyr, which closed in 1961, were purchased.
Paragon Park closed in 1984, and the roller coaster was purchased by Wild World, a zoo that was returning rides to its parks at that time. They hired the Dinn Corporation to take down the roller coaster and rebuild it at its new home in Upper Marlboro, MD. They were able to pay homage to the original finale with a new helix and airtime hills. A new transfer track outside of the station to store a train was also integrated, thanks to the extra land available at its new location. The ride was renamed the Wild One and opened to public acclaim in 1986. The ride still operates under the same name at Six Flags America, the current name for Wild World.