Cuatro Torres Business Area (CTBA) is a business park near the Paseo de la Castellana, Madrid (Spain), on the grounds of the former Ciudad Deportiva of Real Madrid. Initially known as the Madrid Arena, the consortium of the four towers owners decided to adopt a new corporate image for the set and the name Cuatro Torres Business Area. This business park consists of four skyscrapers that are the tallest buildings in Madrid and Spain. The four buildings are the Torre Caja Madrid, Sacyr Vallehermoso Tower, Torre de Cristal and Torre Espacio. The former is the highest in Madrid and Spain with its 250 meter high.