Johnson Space Center (NASA), Texas

Mission control center for NASA's space flights, and one of the  most popular tourist attractions in Texas. A new visitors center/entertainment facility was built in 1992, featuring the best that the NASA and Walt Disney team could produce for $70 million. In 1995, a control room for the International Space Station (ISS) was built as part of a larger $250 million renovation. Also in 1995, modifications were begun on the existing Neutral Buoyancy Laboratory tank (one of the largest indoor pools in the world), which is used to simulate the weightlessnes of space. In 1998, three new flight control rooms designed for space shuttle missions (designated Red, White, and Blue), went online. Gradually over the years as the space shuttle program wound down, those rooms were converted to accomodate ISS operations. Part of the old Apollo mission control center has been preserved as a National Historic Landmark.