Velázquez, and Casa de Vacas. In the Retiro Park is also the Forest of Remembrance (Bosque del recuerdo), a memorial monument to commemorate the 191 victims of the 11 March 2004 Madrid attacks. Activities From late May through early October, every Sunday at midday, the Banda Sinfónica de Madrid gives free concerts from the bandstand in the park near the Calle de Alcalá. Manuel Lillo Torregrosa composed 'Kiosko del Retiro' to this bandstand. The Park also features an annual Book Fair. Not only is there an annual book fair, but shelves for used books where people will drop off their used books, magazines, or newspapers. There are events throughout the year such as concerts, firework shows, and holiday/cultural events. There is also an outdoor exercising area for both the old and the young. While the older one includes equipment to stretch, keep arthritis in check, and keeps the elderly active with things such as bicycle pedals. The younger portion includes bars for triceps dips, pull-ups, sit-ups, and locals have brought bigger stones to use as weights. Around the lake, Retiro Pond, many puppet shows perform, and all manner of street performers and fortune tellers. Rowboats can be rented to paddle about the Estanque, and horse-drawn carriages are available. If rowing is not your forte there is a solar powered boat you can book passage on. Retiro provides multiple different sports courts that are managed by the city. For children there are multiple playground areas as well as ponds throughout the park with ducks you can feed. The inside of the Palacio de Cristal has been modified to include a stone slide. The major paths and walkways are used by families, runners, bikers and rollerbladers. Notes External links Parque del Buen Retiro — a Gardens Guide history Paseo del Prado and Buen Retiro, a landscape of Arts and Sciences UNESCO collection on Google Arts and Culture The park's entry in a Walking Tour of Madrid Parks in Madrid Buen Retiro Park Art gallery districts Calle de Alcalá Urban public parks