Fiserv Forum was built to replace the BMO Harris Bradley Center, which was one of the oldest active NBA arenas by the end of the Milwaukee Bucks’ tenancy in 2018. Ground-breaking and construction of Fiserv Forum began on June 18th, 2016, and the arena received its certificate of occupancy on June 5th, 2018. The construction cost of Fiserv Forum was an estimated US$1.2 billion.
The capacity varies depending on the event, for basketball games, it can seat 17,385 people. For hockey and indoor football games, it can seat 15,178 people. For concerts, it can seat up to 18,000 people.