In Retiro Park (Parque del Retiro, or simply El Retiro) you can sit back and relax after a busy day of exploring Madrid, or you can explore the park on a guided tour by bike, on foot, or even on a Segway! The park is the green lung of Madrid and is also one of the most important and beloved outdoor spaces for the city’s residents. And, of course, it’s a popular destination for tourists!