Chapultepec Castle is a historic palace located in Chapultepec Park, Mexico City, Mexico. The castle was built on the highest hill of Chapultepec Park, which was a sacred site for the Aztecs. The site was chosen by the Aztecs because of its strategic location, which provided a panoramic view of the surrounding valley.

The castle was built in the 18th century as a summer residence for the Spanish Viceroy. During the Mexican War of Independence, the castle was used as a military academy. In 1847, during the Mexican-American War, the castle was the site of the Battle of Chapultepec, where a group of Mexican cadets defended the castle against the invading American army.

In 1864, Emperor Maximilian I of Mexico made the castle his residence and made several renovations, turning it into a palace. After the fall of Maximilian's empire, the castle was used by the Mexican presidents Porfirio Diaz and Venustiano Carranza. Today, the castle houses the National Museum of History, which showcases Mexico's history from the pre-Columbian era to the Mexican Revolution.

Chapultepec Castle is a popular tourist destination in Mexico City and is visited by thousands of people every year. The castle is an architectural masterpiece, featuring a blend of European and Mexican styles. The castle's interior is adorned with murals, frescoes, and sculptures by famous Mexican artists such as Juan Cordero and Santiago Rebull. The castle's gardens are also famous for their beauty and are home to many rare species of plants and trees. The castle's location on top of the hill provides a breathtaking view of the city, making it a must-visit destination for anyone visiting Mexico City.