Flight Control Room 1, constructed in 1965 and restored to its Apollo-era configuration in 2019, remains the only operational NASA control room open to civilian visitors. The consoles that monitored Neil Armstrong's descent onto the lunar surface still display their original Univac computers, rotary phones, and vacuum-tube telemetry screens. Gene Kranz's white vest hangs in a glass case near Console 4, the capcom station where astronauts first radioed "Houston, Tranquility Base here. The Eagle has landed." The room anchors Building 30 at Johnson Space Center, where 14,000 NASA personnel continue active mission operations for the International Space Station and Artemis lunar program. The houston mission control tram tour departs from Space Center Houston's main plaza every 15 minutes during peak hours, carrying 50 passengers per coach across the 1,600-acre Johnson Space Center campus. Docents narrate the four-mile circuit past neutral buoyancy pools, astronaut training simulators, and the original Mercury Mission Control—now a working archive. The 90-minute route includes a 20-minute stop inside Flight Control Room 1, where visitors stand behind the flight director's console and view the original mission clocks, each frozen at the moment Apollo 17 splashed down in December 1972. NASA decommissioned the room in 1992 when Shuttle operations moved to the newer Flight Control Room 2. Volunteers spent 18 months sourcing period-accurate toggle switches, Formica desk panels, and CRT monitors to return the space to its 1969 appearance. The Manned Spacecraft Center—renamed Johnson Space Center in 1973—hosts 1.2 million visitors annually, but daily tram capacity remains capped at 2,000 boarding passes to preserve the control room's climate-controlled environment. Passes distribute on a first-come basis starting at 10:00 each morning. The tram system itself predates public tours. NASA engineers built the diesel coaches in 1967 to transport contractors between scattered construction sites during the center's expansion. When Space Center Houston opened as the official visitor complex in 1992, the existing tram fleet converted to narrated tours, adding covered awnings and bench seating. Houston mission control tram tour guides complete a six-week training program led by retired flight controllers, who teach them to decode the alphanumeric displays on each console and explain the communication protocols that linked Mission Control to tracking stations in Guam, Madrid, and Australia.