If you're into military hardware, this four-story museum houses examples of the vast amount of vehicles and weaponry accumulated by China's military during the 20th century. Head past the marble Mao Zedong statue at the entrance into the giant Hall of Weapons. You'll see Cold War-era fighter planes, tanks, and an enormous surface-to-air ballistic missile. There's also the obligatory Communist spin on China's wars against other countries, which carries through the museum's exhibits, display text, and films. Much of the space remains under renovation, a process which began in 2012.