Short answers, pulled from the story.
The arena opened in November 1999 to replace Market Square Arena. It originally operated under the name Conseco Fieldhouse after naming rights were sold to a financial services organization based in nearby Carmel.
Ellerbe Becket designed the facility with a distinctive brick and glass facade that evokes Indiana's classic high school and college field houses. The architects shaped the floor plan around the needs of basketball players and fans rather than using a typical bowl shape found in multi-purpose stadiums.
Conseco Financial Group retained the name until it expired on the 30th of June 2019. Bankers Life and Casualty became the new sponsor in December 2011 before Indianapolis-based Gainbridge announced a multi-year partnership on the 27th of September 2021.
The Indiana Pacers reached the 2000 NBA Finals against the Los Angeles Lakers where games three four and five took place inside the arena. The venue also hosted the 2009 WNBA Finals where the Indiana Fever faced the Phoenix Mercury and the 2012 WNBA Finals where the Fever beat the Minnesota Lynx.
Metallica set a new attendance record at the venue on the 11th of March 2019 by drawing 18,274 fans to the concert. The previous record was held by Billy Joel with 16,594 attendees.