Cycling in Madrid began operations in 2014 and it comprises with 123 stations and 1580 bicycles. La Vuelta a España, Spain's most popular cycling competition, always ends in Madrid. The "Anillo Verde Ciclista" (Cyclist Green Ring) is a bikeway that surrounds the city of Madrid. It is 64 kilometres long, and the average time to go across it is 4 hours and a half. It was built by phases, between the year 1995 and 2007. "Madrid Río" (literally: Madrid River) is a park located in the banks of the Manzanares River. It opened in 2011, and it is crossed by a cycle route
Allison Engine Testing Stands section. The most prominent features of the six open engine testing stands constructed in 1942 are the six reinforced concrete walls which separated the testing stands and provided a degree of protection against excessive noise or a propeller malfunction. Stands 1 to 4, numbered from the north, have been constructed on a raised concrete platform above ground level. Parts of its flooring have been raised higher above the general level of the platform. They indicate the positions where each engine stand and its respective control cabin would have stood. Most of the remaining evidence of the purpose and working life