Question: The Mobile Launcher Platform as well as the Saturn V and the Space Shuttle were assembled at this NASA facility.
Context: Mobile Launcher Platform 1 or MLP-1, formerly Mobile Launcher 3 or ML-3 is one of three Mobile Launcher Platforms used at Kennedy Space Center Launch Complex 39.  Saturn V and Space Shuttle launches were conducted from MLP-1 between 1969 and 2009.  It was modified for use in the Constellation program but ended up being used only once for the Ares I-X launch before the cancellation of the program. The crawler-transporters, formally known as the Missile Crawler Transporter Facilities, are a pair of tracked vehicles used to transport spacecraft from NASA's Vehicle Assembly Building (VAB) along the Crawlerway to Launch Complex 39.  They were originally used to transport the Saturn IB and Saturn V rockets during the Apollo, Skylab and Apollo–Soyuz programs.  They were then used to transport Space Shuttles from 1981 to 2011.  The crawler-transporters carry vehicles on the Mobile Launcher Platform, and after each launch return to the pad to take the platform back to the VAB. The Vehicle (originally Vertical) Assembly Building, or VAB, at NASA's Kennedy Space Center (KSC) is a building designed to assemble large space vehicles, such as the massive Saturn V and the Space Shuttle.  The future Space Launch System (SLS) will also be assembled there. Mobile Launcher Platform 2 or MLP-2, formerly Mobile Launcher 2 or ML-2 is one of three Mobile Launcher Platforms used at Kennedy Space Center Launch Complex 39.  During the late 1960s and early 1970s, it was used for Saturn V and Saturn INT-21 launches, and was subsequently used by the Space Shuttle. The Saturn V Instrument Unit is a ring-shaped structure fitted to the top of the Saturn V rocket's third stage (S-IVB) and the Saturn IB's second stage (also an S-IVB).  It was immediately below the SLA "(Spacecraft/Lunar Module Adapter)" panels that contained the Lunar Module.  The Instrument Unit contains the guidance system for the Saturn V rocket.  Some of the electronics contained within the Instrument Unit are a digital computer, analog flight control computer, emergency detection system, inertial guidance platform, control accelerometers and control rate gyros.  The instrument unit (IU) for Saturn V was designed by NASA at Marshall Space Flight Center (MSFC) and was developed from the Saturn I IU.  NASA's contractor to construct the Saturn V Instrument Unit was International Business Machines (IBM). Saturn V Dynamic Test Stand, also known as Dynamic Structural Test Facility, at the George C. Marshall Space Flight Center in Huntsville, Alabama is the test stand used for testing of the Saturn V rocket and the Space Shuttle prior to the vehicles' first flights.  Designated building 4550, it stands 363 ft tall and is 98 ft square.  NASA built the test stand in 1964 to conduct mechanical and vibrational tests on the fully assembled Saturn V rocket.  Major problems capable of causing failure of the vehicle were discovered and corrected here. STS-32 was the 33rd mission of NASA's Space Shuttle program, and the 9th launch of Space Shuttle "Columbia".  Launched on 9 January 1990, it marked the first use of Launch Pad A at Kennedy Space Center's Complex 39 since 1986; it also marked the first use of Mobile Launcher Platform No. 3 (MLP-3) in the Space Shuttle program.  STS-32 was, at the time, the longest shuttle mission yet conducted, with a duration of nearly 11 days.  Before STS-32, the only mission of the same duration had been STS-9 in 1983.  On 20 January 1990, STS-32 executed the third night landing of the shuttle program. Mobile Launcher Platform 3 or MLP-3, formerly Mobile Launcher 1 or ML-1 is one of three Mobile Launcher Platforms used at Kennedy Space Center Launch Complex 39.  During the late 1960s and early 1970s, it was used for Saturn V and Saturn IB launches, and later for the Space Shuttle. The Mobile Launcher Platform (MLP) is one of three two-story structures used by NASA at the Kennedy Space Center to support the Space Shuttle stack throughout the build-up and launch process: during assembly at the Vehicle Assembly Building (VAB), while being transported to Launch Pads 39A and B, and as the vehicle's launch platform.  NASA's three MLPs were originally constructed for the Apollo program to launch the Saturn V rockets in the 1960s and 1970s, and remained in service through the end of the shuttle program in 2011 with alterations. This is a list of space shuttle rollbacks.  "Rollback" is the term NASA uses when the space shuttle was rolled back from the launch pad atop the Mobile Launcher Platform and Crawler-transporter to the Vehicle Assembly Building (VAB).  A variety of factors could require a rollback, from severe weather to the need for repairs that could not be performed at the launch pad.  Shuttle rollbacks are listed in chronological order:
Answer: Vehicle Assembly Building