Short answers, pulled from the story.
Spectrum Center cost $265 million to build, slightly above the initial estimate of $260 million for Charlotte and Mecklenburg County. The city council approved construction without holding a second public referendum.
Charter Communications purchased Time Warner Cable in 2016 and renamed the arena to reflect its Spectrum trade name for cable services. The arena had previously been renamed from Charlotte Bobcats Arena to Time Warner Cable Arena in 2008 when Time Warner Cable bought the naming rights.
The NBA removed Charlotte as host of the 2017 All-Star Game on the 21st of July 2016, due to the league's opposition to North Carolina's Public Facilities Privacy and Security Act. The game moved to New Orleans, and Charlotte was later awarded the 2019 NBA All-Star Game after changes were made.
The first 16-over-1 upset in NCAA Tournament history since the 64-team field was adopted took place at Spectrum Center on the 16th of March 2018. The UMBC Retrievers defeated the Virginia Cavaliers 74-54.
The original center-hung scoreboard was the largest in any NBA arena at the time of its debut. It also featured a one-of-a-kind 360-degree, three-dimensional light-up mural of the Charlotte skyline. It was replaced in 2016 by a $7 million scoreboard with screens nearly twice the size.
Spectrum Center was used as a filming location for the season six finale of One Tree Hill, which aired on the 18th of May 2009. American Idol held its Season 12 auditions there on the 19th of June 2012. The series finale of the HBO show Veep is primarily set inside the arena.