Madrid's Crystal Palace in Retiro Park.

Nowadays, the palace is mainly used to hold contemporary art exhibitions. In the lake in front of the Crystal Palace, there are several Italian cypress trees growing in the water, with the special feature that their roots and part of the trunk are submerged in water. The Crystal Palace is surrounded by tall Indian chestnut trees. Many people come to the park to visit, especially on weekends. El Retiro Park is the largest and most beautiful park in Madrid. Buen Retiro means "ideal retreat". In the 16th century, the royal family celebrated Christmas and Easter here, and later Philip IV ordered it to be built as a royal garden for the entertainment of the royal family. The park covers an area of 130 hectares, with over 15,000 planted plants and many important monuments. The roads and squares in the park are named after current Spanish-speaking countries, such as Bolivia Avenue, Venezuela Avenue, Nicaragua Square, and Panama Square. The park also has an artificial lake where you can rent a small boat to paddle on the lake.