by a conventional chain lift, or propelled around the course at a constant speed by a Linear Motor system. The company is known for being the original home to Bolliger & Mabillard (B&M). The two engineers worked for Giovanola who in turn were frequently contracted by Intamin for their early stand-up roller coasters (Giovanola eventually started producing roller coasters independently). B&M broke away from Giovanola to form their own company which now supplies roller coasters as well. Similarities between the two companies are often obvious, such as the style of track used by B&M, which was used in a number of early Giovanola installations which were contracted by Intamin. Ferris wheels Intamin brokered a number of rides that were manufactured by Waagner-Biro. These included a series of rides for Marriott Corporation, each comprising a vertical column supporting multiple horizontal arms, with each arm supporting a Ferris wheel. The first was Giant Wheel which operated at Hersheypark in Hershey, Pennsylvania from 1973 until 2004. Similar Intamin supplied Waagner-Biro wheels included Zodiac (Kings Island, Mason, Ohio) and Scorpion (Parque de la Ciudad, Buenos Aires, Argentina). All are now defunct. Sky Whirl, the world's first triple Ferris wheel, which debuted at both Marriott's Great America parks (now Six Flags Great America, Gurnee, Illinois, and California's Great America, Santa Clara) in 1976, was also manufactured by Waagner-Biro and brokered by Intamin. Also known as a triple Ferris wheel, Triple Giant Wheel, or Triple Tree Wheel, it was in height. The Santa Clara ride, renamed Triple Wheel in post-Marriott years, closed on 1 September 1997. The Gurnee ride closed in 2000. The Orlando Eye, which opened in April 2015, was designed and built by Intamin. Transportation Outside the amusement realm, Intamin supplies monorail transportation systems which are used in both public transport networks and at tourist attractions across the world. Intamin was responsible for the design and building of the Moscow Monorail (), which is long and is located in the North-Eastern Administrative Okrug of Moscow, Russia, running from the Timiryazevskaya metro station to Sergeya Eisensteina street. Planning of the monorail started in 1998. It has six stations. In 2016 two monorails using Intamin equipment were opened, the Ashgabat Monorail in Turkmenistan and a monorail in the Cross River State, Nigeria which connects the Calabar International Convention Centre to the Tinapa Resort. In 2020 the Marconi Express Monorail opened successfully as a shuttle between the