The Astrodome, also known as the Houston Astrodome, and officially named the NRG Astrodome, is the world's first multi-purpose, domed sports stadium, located in Houston, Texas, USA. It served as the second home to the Houston Astros of Major League Baseball (MLB) from its opening until 1999, and also to the Houston Oilers of the National Football League (NFL) from 1968 until 1997. Additionally, the Astrodome was the primary venue of the Houston Livestock Show and Rodeo from 1966 until 2002. It opened in 1965 as Harris County Domed Stadium and was nicknamed the "Eighth Wonder of the World".
The stadium is part of the NRG Park complex that was originally known as the "Astrodomain" located in Houston's Texas Medical Center business district, and was constructed from 1962 until 1964 after being funded for $35 million by Harris County taxpayers. It received considerable renovations in 1988 that significantly expanded seating, and altered many original features. The venue regularly hosted events until it was declared non-compliant with fire code by the Houston Fire Department in 2008. Parts of it were demolished in 2013, after several years of disuse.
While originally utilizing a natural grass playing surface, the Astrodome became the first major sports venue to feature artificial turf, which became known as AstroTurf. In another technological first, the Astrodome featured the "Astrolite", which was the first animated scoreboard. In 2014 it was listed on the National Register of Historic Places.