In the late 1950s, in order to keep pace with the Soviet Union, the U.S. government created a fictitious town named Apix (Air Products Incorporated, Experimental) to build and test rocket engines powered by liquid hydrogen.
The project, codenamed “Suntan,” was highly classified and required a large degree of secrecy. Land near the testing ground in rural Palm Beach County was platted for houses to conceal the true nature of the site. Apix was given a bogus population to add to its cover as a small fertilizer-producing community.
By June 1959, the use of liquid hydrogen was determined to be too costly. The project was abandoned and Apix was dismantled.