write a thorough introduction about the summer palace in Beijing

The Summer Palace, located in the Haidian District of Beijing, China, is a magnificent imperial garden that is considered to be one of the most beautiful and well-preserved royal gardens in the world. The palace complex occupies an area of 2.9 square kilometers and features a stunning landscape of lakes, gardens, and palaces that have been crafted with great attention to detail. The palace was originally built in the 18th century as a retreat for the royal family to escape the summer heat and has since been enlarged and renovated by several emperors. Today, the Summer Palace is a UNESCO World Heritage Site and an important cultural landmark in China, attracting millions of visitors from around the world every year. With its rich history, breathtaking scenery, and impressive architecture, the Summer Palace is a must-visit destination for anyone interested in Chinese culture and history