Chapultepec, also known as the "Bosque de Chapultepec," is a massive city park in Mexico City, spanning over 686 hectares. It's like the lungs of the city, providing a green oasis for locals and visitors to escape the hustle and bustle. With its museums, zoo, and beautiful landscapes, it's a popular spot for about 15 million people each year. Plus, it's a haven for birds and wildlife, making it a cool place to chill and reconnect with nature in the heart of Mexico City. Note: The entire park is closed on Mondays including the Chapultapec Castle.