Aerojet Rocket

In 1963, Aerojet General was given a $3 million contract from the U.S. Air Force to build a manufacturing and testing site for rockets that would send astronauts to the moon.
The plant was constructed in the center of Florida's Everglades in the town of Homestead.
Beneath a large metal shed, a 150-foot deep silo housed the largest solid-fuel rocket motor ever built. The rocket was tested three times between 1965 and 1967.
Then NASA dropped the project. The agency decided to go with liquid-fuel rocket engines instead. The plant was closed in 1969, leaving the rocket behind.
Source:http://www.businessinsider.com/aerojet-dade-abandoned-rocket-facility-2012-10?utm_source=1024&utm_medium=yahoo&utm_term=&utm_content=&utm_campaign=partner#