Satellite images show 'Beijing Military City,' the secretive command center China is building. It may be the world's largest.

Satellite imagery from February shows a military base under construction that's been dubbed, "Beijing Military City."

Maxar

• China is secretly building a military command center that is expected to dwarf the Pentagon in size.
• Satellite images showed the rapid construction of the 1,500-acre site located southwest of Beijing.
• Analysts and researchers said the facility could be used as a nuclear bunker for Chinese officials.

China is constructing a massive military...