The Paseo de la Castellana is one of the main avenues in Madrid, Spain. Stretching approximately 7 kilometers, it runs from the north to the south of the city, connecting various neighborhoods and important landmarks. The avenue is known for its wide lanes, green spaces, and modern architecture. Along the Paseo de la Castellana, visitors can find notable sites such as the Plaza de Castilla and the Cuatro Torres Business Area. The avenue is also home to several cultural institutions, hotels, and corporate offices, making it a vital part of Madrid's urban landscape and economy.