A transportable Ferris wheel was first installed at Exchange Square in 2004, known as the Wheel of Manchester. This was dismantled and a second wheel was erected in May 2007.[3] The most recently installed wheel, operated by Great City Attractions, had 42 passenger cars and was 60 metres (200 ft) tall.[4] A 91.4-metre (300 ft) wheel was planned for 2008[3] but never constructed. In 2010, Manchester City Council proposed a 120 m (394 ft) wheel, to be operated by Great City Attractions, as a replacement for the existing transportable installation, which was installed at Piccadilly Gardens until 2015.[5]