Nike Hercules Missile Base HM-69 in Everglades National Park is now open for tours. This missile base was built in the isolation of the Everglades, yet only 160 miles from Cuba and less than one year after the Cuban Missile Crisis. Now the missile base serves as a reminder of the roles played by Florida and Cuba in that chapter of the world's history.
The Everglades National Park has tours available each Saturday from now until March 28. For more information, please read the park's news release.
I first learned about these tours through the National Park Service's Heritage News, a newsletter available on the web or through an e-mail subscription.
For further reading, I also recommend the Cold War in South Florida Historic Resource Study (pdf) by the National Park Service's Southeast Regional Office. This report describes the sites used in South Florida during the Cold War, and includes a history of air defense in South Florida.