High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! Great Wheel Corporation is a company engaged in the development, building, financing, and operation of observation platforms and observation wheels (Ferris wheels). The company built the tallest wheel in the world, the 165-metre (541 ft) Singapore Flyer, and is currently building the 208-metre (682 ft) Beijing Great Wheel. In 2009, the Great Wheel Corporation merged with World Tourist Attractions to form Great City Attractions Ltd.