They supported some of the nation's first satellite launches, helped send probes to other planets and established the Global Positioning System satellite constellation so embedded in everyday life.
Cape Canaveral's Launch Complex 17 has been through a lot. Gen. Wayne Monteith, commander of the 45th Space Wing, activated the detonator for the demolition. All that has come to an end, however, as the complex's historic launch towers have been demolished to make way for something new. In all, it hosted 325 launches.
It's been almost seven years since the towers were used in a launch, and was used for Delta II and other notable missions, according to the report.More news: President Emmanuel Macron leads France's World Cup celebrations
The $2 million demolition project had been in the works since then.
The almost 60-metre-tall towers came tumbling down after explosives were activated, sending them falling in opposite directions at the US Air Force base in Florida.
The plot, originally designated Launch Complex 17 was built to support testing of the first operational ballistic missile of the United States "Thor".More news: CE Retailers Serving Deals During Prime Day
NASA's first three Mars rovers - Sojourner, Spirit and Opportunity - were launched there, as were dozens of Global Positioning System navigation-related flights and numerous scientific, commercial and military payloads, a report from Space Flight Now said.
Moon Express is testing engines and landers at the site, but they will be launched atop rockets from other pads or possibly other launch sites.
One more Delta II launch remains, planned this September from California.More news: Chicago clashes after United States police kill black man
The spaceflight firm, which has been developing robotic lunar landers for future NASA missions to the moon, has leased both LC-17 and the adjacent LC-18 from the USAF, but has no use for the twin launch towers. Download the 10News app now.